[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux-lts-trusty -
3.13.0-79.123~precise1

---
linux-lts-trusty (3.13.0-79.123~precise1) precise; urgency=low

  [ Seth Forshee ]

  * SAUCE: cred: Add clone_cred() interface
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Use mounter's credentials instead of full kernel
credentials
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.*
xattrs
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Be more careful about copying up sxid files
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Propogate nosuid from lower and upper mounts
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576

linux (3.13.0-78.122) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
- LP: #1540559

  [ Eric Dumazet ]

  * SAUCE: (no-up) udp: properly support MSG_PEEK with truncated buffers
- LP: #1527902

  [ J. R. Okajima ]

  * SAUCE: ubuntu: aufs: tiny, extract a new func xino_fwrite_wkq()
- LP: #1533043
  * SAUCE: ubuntu: aufs: for 4.3, XINO handles EINTR from the dying process
- LP: #1533043

  [ Upstream Kernel Changes ]

  * Revert "[stable-only] net: add length argument to
skb_copy_and_csum_datagram_iovec"
- LP: #1538756
  * unregister_netdevice : move RTM_DELLINK to until after ndo_uninit
- LP: #1525324
  * rtnetlink: delay RTM_DELLINK notification until after ndo_uninit()
- LP: #1525324
  * Drivers: hv: Eliminate the channel spinlock in the callback path
- LP: #1519897
  * Drivers: hv: vmbus: Implement per-CPU mapping of relid to channel
- LP: #1519897
  * Drivers: hv: vmbus: Suport an API to send pagebuffers with additional
control
- LP: #1519897
  * Drivers: hv: vmbus: Suport an API to send packet with additional
control
- LP: #1519897
  * Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl()
- LP: #1519897
  * Drivers: hv: vmbus: Fix a siganlling host signalling issue
- LP: #1519897
  * Drivers: hv: vmbus: Fix a Host signaling bug
- LP: #1519897
  * ARC: Fix silly typo in MAINTAINERS file
- LP: #1538756
  * ip6mr: call del_timer_sync() in ip6mr_free_table()
- LP: #1538756
  * gre6: allow to update all parameters via rtnl
- LP: #1538756
  * atl1c: Improve driver not to do order 4 GFP_ATOMIC allocation
- LP: #1538756
  * sctp: use the same clock as if sock source timestamps were on
- LP: #1538756
  * sctp: update the netstamp_needed counter when copying sockets
- LP: #1538756
  * ipv6: sctp: clone options to avoid use after free
- LP: #1538756
  * net: add validation for the socket syscall protocol argument
- LP: #1538756
  * sh_eth: fix kernel oops in skb_put()
- LP: #1538756
  * pptp: verify sockaddr_len in pptp_bind() and pptp_connect()
- LP: #1538756
  * bluetooth: Validate socket address length in sco_sock_bind().
- LP: #1538756
  * af_unix: Revert 'lock_interruptible' in stream receive code
- LP: #1538756
  * KEYS: Fix race between read and revoke
- LP: #1538756
  * tools: Add a "make all" rule
- LP: #1538756
  * efi: Disable interrupts around EFI calls, not in the epilog/prolog
calls
- LP: #1538756
  * net: ipmr: fix static mfc/dev leaks on table destruction
- LP: #1538756
  * fuse: break infinite loop in fuse_fill_write_pages()
- LP: #1538756
  * usb: gadget: pxa27x: fix suspend callback
- LP: #1538756
  * iio: fix some warning messages
- LP: #1538756
  * USB: cp210x: Remove CP2110 ID from compatibility list
- LP: #1538756
  * USB: cdc_acm: Ignore Infineon Flash Loader utility
- LP: #1538756
  * USB: serial: Another Infineon flash loader USB ID
- LP: #1538756
  * ext4: Fix handling of extended tv_sec
- LP: #1538756
  * jbd2: Fix unreclaimed pages after truncate in data=journal mode
- LP: #1538756
  * drm/ttm: Fixed a read/write lock imbalance
- LP: #1538756
  * i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
- LP: #1538756
  * AHCI: Fix softreset failed issue of Port Multiplier
- LP: #1538756
  * sata_sil: disable trim
- LP: #1538756
  * staging: lustre: echo_copy.._lsm() dereferences userland pointers
directly
- LP: #1538756
  * irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
- LP: #1538756
  * usb: core : hub: Fix BOS 'NULL pointer' kernel panic
- LP: #1538756
  * USB: whci-hcd: add check for dma mapping error
- LP: #1538756
  * usb: Use the USB_SS_MULT() macro to decode burst multiplier for log
message
- LP: #1538756
  * dm btree: fix leak of bufio-backed block in btree_split_sibling error
path
- LP: #1538756
  * SCSI: Fix NULL pointer dereference in runtime PM
- LP: #1538756
  * usb: xhci: fix config fail of FS hub behind a HS hub with MTT
- LP: #1538756
  * ALSA: rme96: Fix unexpected volume 

[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux-lts-utopic -
3.16.0-62.82~14.04.1

---
linux-lts-utopic (3.16.0-62.82~14.04.1) trusty; urgency=low

  [ Seth Forshee ]

  * SAUCE: cred: Add clone_cred() interface
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Use mounter's credentials instead of selectively
raising caps
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.*
xattrs
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Be more careful about copying up sxid files
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Propogate nosuid from lower and upper mounts
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576

linux-lts-utopic (3.16.0-61.81~14.04.1) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
- LP: #1541076

  [ Eric Dumazet ]

  * SAUCE: (no-up) udp: properly support MSG_PEEK with truncated buffers
- LP: #1527902

  [ J. R. Okajima ]

  * SAUCE: ubuntu: aufs: tiny, extract a new func xino_fwrite_wkq()
- LP: #1533043
  * SAUCE: ubuntu: aufs: for 4.3, XINO handles EINTR from the dying process
- LP: #1533043

  [ Upstream Kernel Changes ]

  * Revert "[stable-only] net: add length argument to
skb_copy_and_csum_datagram_iovec"
- LP: #1540412
  * xfrm: dst_entries_init() per-net dst_ops
- LP: #1486670
  * fuse: break infinite loop in fuse_fill_write_pages()
- LP: #1540412
  * usb: gadget: pxa27x: fix suspend callback
- LP: #1540412
  * iio: fix some warning messages
- LP: #1540412
  * USB: cp210x: Remove CP2110 ID from compatibility list
- LP: #1540412
  * USB: cdc_acm: Ignore Infineon Flash Loader utility
- LP: #1540412
  * USB: serial: Another Infineon flash loader USB ID
- LP: #1540412
  * ext4: Fix handling of extended tv_sec
- LP: #1540412
  * jbd2: Fix unreclaimed pages after truncate in data=journal mode
- LP: #1540412
  * drm/ttm: Fixed a read/write lock imbalance
- LP: #1540412
  * AHCI: Fix softreset failed issue of Port Multiplier
- LP: #1540412
  * sata_sil: disable trim
- LP: #1540412
  * usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter
JMicron
- LP: #1540412
  * staging: lustre: echo_copy.._lsm() dereferences userland pointers
directly
- LP: #1540412
  * irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
- LP: #1540412
  * usb: core : hub: Fix BOS 'NULL pointer' kernel panic
- LP: #1540412
  * USB: whci-hcd: add check for dma mapping error
- LP: #1540412
  * usb: Use the USB_SS_MULT() macro to decode burst multiplier for log
message
- LP: #1540412
  * dm btree: fix leak of bufio-backed block in btree_split_sibling error
path
- LP: #1540412
  * perf: Fix PERF_EVENT_IOC_PERIOD deadlock
- LP: #1540412
  * usb: xhci: fix config fail of FS hub behind a HS hub with MTT
- LP: #1540412
  * ALSA: rme96: Fix unexpected volume reset after rate changes
- LP: #1540412
  * ALSA: hda - Add inverted dmic for Packard Bell DOTS
- LP: #1523232, #1540412
  * virtio: fix memory leak of virtio ida cache layers
- LP: #1540412
  * nfs4: limit callback decoding to received bytes
- LP: #1540412
  * SUNRPC: Fix callback channel
- LP: #1540412
  * IB/srp: Fix possible send queue overflow
- LP: #1540412
  * ALSA: hda - Fixing speaker noise on the two latest thinkpad models
- LP: #1523517, #1540412
  * 9p: ->evict_inode() should kick out ->i_data, not ->i_mapping
- LP: #1540412
  * radeon/cik: Fix GFX IB test on Big-Endian
- LP: #1540412
  * radeon: Fix VCE ring test for Big-Endian systems
- LP: #1540412
  * radeon: Fix VCE IB test on Big-Endian systems
- LP: #1540412
  * ALSA: hda - Fix noise problems on Thinkpad T440s
- LP: #1540412
  * dm thin metadata: fix bug when taking a metadata snapshot
- LP: #1540412
  * dm space map metadata: fix ref counting bug when bootstrapping a new
space map
- LP: #1540412
  * ipmi: move timer init to before irq is setup
- LP: #1540412
  * dm btree: fix bufio buffer leaks in dm_btree_del() error path
- LP: #1540412
  * vgaarb: fix signal handling in vga_get()
- LP: #1540412
  * xhci: fix usb2 resume timing and races.
- LP: #1540412
  * USB: add quirk for devices with broken LPM
- LP: #1540412
  * parisc iommu: fix panic due to trying to allocate too large region
- LP: #1540412
  * mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
- LP: #1540412
  * mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't
make any progress
- LP: #1540412
  * mm: hugetlb: call huge_pte_alloc() only if ptep is null
- LP: #1540412
  * drivers/base/memory.c: prohibit offlining of memory blocks with missing
sections
- LP: #1540412
  * ocfs2: fix SGID not inherited issue
- LP: #1540412
  * 

[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 3.13.0-79.123

---
linux (3.13.0-79.123) trusty; urgency=low

  [ Seth Forshee ]

  * SAUCE: cred: Add clone_cred() interface
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Use mounter's credentials instead of full kernel
credentials
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.*
xattrs
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Be more careful about copying up sxid files
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Propogate nosuid from lower and upper mounts
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576

linux (3.13.0-78.122) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
- LP: #1540559

  [ Eric Dumazet ]

  * SAUCE: (no-up) udp: properly support MSG_PEEK with truncated buffers
- LP: #1527902

  [ J. R. Okajima ]

  * SAUCE: ubuntu: aufs: tiny, extract a new func xino_fwrite_wkq()
- LP: #1533043
  * SAUCE: ubuntu: aufs: for 4.3, XINO handles EINTR from the dying process
- LP: #1533043

  [ Upstream Kernel Changes ]

  * Revert "[stable-only] net: add length argument to
skb_copy_and_csum_datagram_iovec"
- LP: #1538756
  * unregister_netdevice : move RTM_DELLINK to until after ndo_uninit
- LP: #1525324
  * rtnetlink: delay RTM_DELLINK notification until after ndo_uninit()
- LP: #1525324
  * Drivers: hv: Eliminate the channel spinlock in the callback path
- LP: #1519897
  * Drivers: hv: vmbus: Implement per-CPU mapping of relid to channel
- LP: #1519897
  * Drivers: hv: vmbus: Suport an API to send pagebuffers with additional
control
- LP: #1519897
  * Drivers: hv: vmbus: Suport an API to send packet with additional
control
- LP: #1519897
  * Drivers: hv: vmbus: Export the vmbus_sendpacket_pagebuffer_ctl()
- LP: #1519897
  * Drivers: hv: vmbus: Fix a siganlling host signalling issue
- LP: #1519897
  * Drivers: hv: vmbus: Fix a Host signaling bug
- LP: #1519897
  * ARC: Fix silly typo in MAINTAINERS file
- LP: #1538756
  * ip6mr: call del_timer_sync() in ip6mr_free_table()
- LP: #1538756
  * gre6: allow to update all parameters via rtnl
- LP: #1538756
  * atl1c: Improve driver not to do order 4 GFP_ATOMIC allocation
- LP: #1538756
  * sctp: use the same clock as if sock source timestamps were on
- LP: #1538756
  * sctp: update the netstamp_needed counter when copying sockets
- LP: #1538756
  * ipv6: sctp: clone options to avoid use after free
- LP: #1538756
  * net: add validation for the socket syscall protocol argument
- LP: #1538756
  * sh_eth: fix kernel oops in skb_put()
- LP: #1538756
  * pptp: verify sockaddr_len in pptp_bind() and pptp_connect()
- LP: #1538756
  * bluetooth: Validate socket address length in sco_sock_bind().
- LP: #1538756
  * af_unix: Revert 'lock_interruptible' in stream receive code
- LP: #1538756
  * KEYS: Fix race between read and revoke
- LP: #1538756
  * tools: Add a "make all" rule
- LP: #1538756
  * efi: Disable interrupts around EFI calls, not in the epilog/prolog
calls
- LP: #1538756
  * net: ipmr: fix static mfc/dev leaks on table destruction
- LP: #1538756
  * fuse: break infinite loop in fuse_fill_write_pages()
- LP: #1538756
  * usb: gadget: pxa27x: fix suspend callback
- LP: #1538756
  * iio: fix some warning messages
- LP: #1538756
  * USB: cp210x: Remove CP2110 ID from compatibility list
- LP: #1538756
  * USB: cdc_acm: Ignore Infineon Flash Loader utility
- LP: #1538756
  * USB: serial: Another Infineon flash loader USB ID
- LP: #1538756
  * ext4: Fix handling of extended tv_sec
- LP: #1538756
  * jbd2: Fix unreclaimed pages after truncate in data=journal mode
- LP: #1538756
  * drm/ttm: Fixed a read/write lock imbalance
- LP: #1538756
  * i2c: mv64xxx: The n clockdiv factor is 0 based on sunxi SoCs
- LP: #1538756
  * AHCI: Fix softreset failed issue of Port Multiplier
- LP: #1538756
  * sata_sil: disable trim
- LP: #1538756
  * staging: lustre: echo_copy.._lsm() dereferences userland pointers
directly
- LP: #1538756
  * irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
- LP: #1538756
  * usb: core : hub: Fix BOS 'NULL pointer' kernel panic
- LP: #1538756
  * USB: whci-hcd: add check for dma mapping error
- LP: #1538756
  * usb: Use the USB_SS_MULT() macro to decode burst multiplier for log
message
- LP: #1538756
  * dm btree: fix leak of bufio-backed block in btree_split_sibling error
path
- LP: #1538756
  * SCSI: Fix NULL pointer dereference in runtime PM
- LP: #1538756
  * usb: xhci: fix config fail of FS hub behind a HS hub with MTT
- LP: #1538756
  * ALSA: rme96: Fix unexpected volume reset after rate changes
- LP: #1538756
 

[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux-lts-utopic -
3.16.0-62.82~14.04.1

---
linux-lts-utopic (3.16.0-62.82~14.04.1) trusty; urgency=low

  [ Seth Forshee ]

  * SAUCE: cred: Add clone_cred() interface
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Use mounter's credentials instead of selectively
raising caps
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Skip permission checking for trusted.overlayfs.*
xattrs
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Be more careful about copying up sxid files
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576
  * SAUCE: overlayfs: Propogate nosuid from lower and upper mounts
- LP: #1534961, #1535150
- CVE-2016-1575 CVE-2016-1576

linux-lts-utopic (3.16.0-61.81~14.04.1) trusty; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
- LP: #1541076

  [ Eric Dumazet ]

  * SAUCE: (no-up) udp: properly support MSG_PEEK with truncated buffers
- LP: #1527902

  [ J. R. Okajima ]

  * SAUCE: ubuntu: aufs: tiny, extract a new func xino_fwrite_wkq()
- LP: #1533043
  * SAUCE: ubuntu: aufs: for 4.3, XINO handles EINTR from the dying process
- LP: #1533043

  [ Upstream Kernel Changes ]

  * Revert "[stable-only] net: add length argument to
skb_copy_and_csum_datagram_iovec"
- LP: #1540412
  * xfrm: dst_entries_init() per-net dst_ops
- LP: #1486670
  * fuse: break infinite loop in fuse_fill_write_pages()
- LP: #1540412
  * usb: gadget: pxa27x: fix suspend callback
- LP: #1540412
  * iio: fix some warning messages
- LP: #1540412
  * USB: cp210x: Remove CP2110 ID from compatibility list
- LP: #1540412
  * USB: cdc_acm: Ignore Infineon Flash Loader utility
- LP: #1540412
  * USB: serial: Another Infineon flash loader USB ID
- LP: #1540412
  * ext4: Fix handling of extended tv_sec
- LP: #1540412
  * jbd2: Fix unreclaimed pages after truncate in data=journal mode
- LP: #1540412
  * drm/ttm: Fixed a read/write lock imbalance
- LP: #1540412
  * AHCI: Fix softreset failed issue of Port Multiplier
- LP: #1540412
  * sata_sil: disable trim
- LP: #1540412
  * usb-storage: Fix scsi-sd failure "Invalid field in cdb" for USB adapter
JMicron
- LP: #1540412
  * staging: lustre: echo_copy.._lsm() dereferences userland pointers
directly
- LP: #1540412
  * irqchip/versatile-fpga: Fix PCI IRQ mapping on Versatile PB
- LP: #1540412
  * usb: core : hub: Fix BOS 'NULL pointer' kernel panic
- LP: #1540412
  * USB: whci-hcd: add check for dma mapping error
- LP: #1540412
  * usb: Use the USB_SS_MULT() macro to decode burst multiplier for log
message
- LP: #1540412
  * dm btree: fix leak of bufio-backed block in btree_split_sibling error
path
- LP: #1540412
  * perf: Fix PERF_EVENT_IOC_PERIOD deadlock
- LP: #1540412
  * usb: xhci: fix config fail of FS hub behind a HS hub with MTT
- LP: #1540412
  * ALSA: rme96: Fix unexpected volume reset after rate changes
- LP: #1540412
  * ALSA: hda - Add inverted dmic for Packard Bell DOTS
- LP: #1523232, #1540412
  * virtio: fix memory leak of virtio ida cache layers
- LP: #1540412
  * nfs4: limit callback decoding to received bytes
- LP: #1540412
  * SUNRPC: Fix callback channel
- LP: #1540412
  * IB/srp: Fix possible send queue overflow
- LP: #1540412
  * ALSA: hda - Fixing speaker noise on the two latest thinkpad models
- LP: #1523517, #1540412
  * 9p: ->evict_inode() should kick out ->i_data, not ->i_mapping
- LP: #1540412
  * radeon/cik: Fix GFX IB test on Big-Endian
- LP: #1540412
  * radeon: Fix VCE ring test for Big-Endian systems
- LP: #1540412
  * radeon: Fix VCE IB test on Big-Endian systems
- LP: #1540412
  * ALSA: hda - Fix noise problems on Thinkpad T440s
- LP: #1540412
  * dm thin metadata: fix bug when taking a metadata snapshot
- LP: #1540412
  * dm space map metadata: fix ref counting bug when bootstrapping a new
space map
- LP: #1540412
  * ipmi: move timer init to before irq is setup
- LP: #1540412
  * dm btree: fix bufio buffer leaks in dm_btree_del() error path
- LP: #1540412
  * vgaarb: fix signal handling in vga_get()
- LP: #1540412
  * xhci: fix usb2 resume timing and races.
- LP: #1540412
  * USB: add quirk for devices with broken LPM
- LP: #1540412
  * parisc iommu: fix panic due to trying to allocate too large region
- LP: #1540412
  * mm: hugetlb: fix hugepage memory leak caused by wrong reserve count
- LP: #1540412
  * mm, vmstat: allow WQ concurrency to discover memory reclaim doesn't
make any progress
- LP: #1540412
  * mm: hugetlb: call huge_pte_alloc() only if ptep is null
- LP: #1540412
  * drivers/base/memory.c: prohibit offlining of memory blocks with missing
sections
- LP: #1540412
  * ocfs2: fix SGID not inherited issue
- LP: #1540412
  * 

[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Sebastian Marsching]

I think that unlike the bug title and description suggest, this bug is
not limited to IPv6. I am having the same problem with FreeRADIUS when
RADIUS packets are received over IPv4. This problem is fixed by the
Kernel from trusty-proposed, too.

Actually, this problem looks a lot like a regression that already
appeared in 3.13.0-66 and was fixed in 3.13.0-67 (see bug #1510213 which
turned out to be the same problem as tracked in #1508510). So maybe,
some measures should be taken to ensure that this regression does not
make it into a released kernel again but it is detected during QA.

A side note regading the problem with FreeRADIUS: I only had this
problem on a multi-core multi-socket machine. On a multi-core single-
socket machine, it did not appear, but this might just have been a
coincidence.

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Title:
  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

Verified ok in Trusty (3.13.0-78.122) and Precise
(3.13.0-78.122~precise1).  The 'jdns' test (comment #20) passes for
3.13.0-78.122 kernels (but fails for the previous versions).

** Tags removed: performing-bisect verification-needed-trusty
** Tags added: verification-done-trusty

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Brad Figg]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-trusty

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Andy Whitcroft]

Fix released in 3.19.0-47.53

** Changed in: linux (Ubuntu Vivid)
   Status: Fix Committed => Fix Released

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

@Pali- The 3.13 kernel (for Trusty and Precise) including this fix is
planned for this week, so it should appear in 'Proposed' within the next
few days -- then the usual week more of baking time before actual
release.  Sorry for the delay, and thanks for your patience!

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.4.0-2.16

---
linux (4.4.0-2.16) xenial; urgency=low

  [ Andy Whitcroft ]

  * Release Tracking Bug
- LP: #1539090
  * SAUCE: hv: hv_set_ifconfig -- convert to python3
- LP: #1506521
  * SAUCE: dm: introduce a target_ioctl op to allow target specific ioctls
- LP: #1538618

  [ Colin Ian King ]

  * SAUCE: ACPI / tables: Add acpi_force_32bit_fadt_addr option to force 32
bit FADT addresses (LP: #1529381)
- LP: #1529381

  [ John Johansen ]

  * SAUCE: (no-up): apparmor: fix for failed mediation of socket that is
being shutdown
- LP: #1446906

  [ Mahesh Salgaonkar ]

  * SAUCE: Powernv: Remove the usage of PACAR1 from opal wrappers
- LP: #1537881
  * SAUCE: powerpc/book3s: Fix TB corruption in guest exit path on HMI
interrupt.
- LP: #1537881
  * SAUCE: KVM: PPC: Book3S HV: Fix soft lockups in KVM on HMI for time
base errors
- LP: #1537881

  [ Paolo Pisati ]

  * SAUCE: arm64: errata: Add -mpc-relative-literal-loads to erratum
#843419 build flags
- LP: #1533009
  * [Config] MFD_TPS65217=y && REGULATOR_TPS65217=y
  * [Config] disable ARCH_ZX (ZTE ZX Soc)

  [ Tim Gardner ]

  * Revert "SAUCE: (noup) cxlflash: a couple off by one bugs"
  * SAUCE: (no-up) Update bnx2x firmware to 7.12.30.0
- LP: #1536719
  * SAUCE: drop obsolete bnx2x firmware
  * SAUCE: i40e: Silence 'may be used uninitialized' warnings
- LP: #1536474
  * [Config] CONFIG_ZONE_DMA=y for amd64 lowlatency
- LP: #1534647
  * [Config] Add pvpanic to virtual flavour
- LP: #1537923
  * [Config] CONFIG_INTEL_PUNIT_IPC=m, CONFIG_INTEL_TELEMETRY=m
- LP: #1520457

  [ Upstream Kernel Changes ]

  * i40evf: fix compiler warning of unused variable
- LP: #1536474
  * intel: i40e: fix confused code
- LP: #1536474
  * i40e/i40evf: remove unused tunnel parameter
- LP: #1536474
  * i40e: Change BUG_ON to WARN_ON in service event complete
- LP: #1536474
  * i40e: remove BUG_ON from feature string building
- LP: #1536474
  * i40e: remove BUG_ON from FCoE setup
- LP: #1536474
  * i40e: Workaround fix for mss < 256 issue
- LP: #1536474
  * i40e/i40evf: Add a stat to track how many times we have to do a force
WB
- LP: #1536474
  * i40e: Move the saving of old link info from handle_link_event to
link_event
- LP: #1536474
  * i40e/i40evf: Add comment to #endif
- LP: #1536474
  * i40e/i40evf: clean up error messages
- LP: #1536474
  * i40evf: handle many MAC filters correctly
- LP: #1536474
  * i40e: return the number of enabled queues for ETHTOOL_GRXRINGS
- LP: #1536474
  * i40e: rework the functions to configure RSS with similar parameters
- LP: #1536474
  * i40e: create a generic configure rss function
- LP: #1536474
  * i40e: Bump version to 1.4.2
- LP: #1536474
  * i40e: add new fields to store user configuration
- LP: #1536474
  * i40e: rename rss_size to alloc_rss_size in i40e_pf
- LP: #1536474
  * i40e/i40evf: Fix RS bit update in Tx path and disable force WB
workaround
- LP: #1536474
  * i40e/i40evf: prefetch skb data on transmit
- LP: #1536474
  * i40evf: rename VF adapter specific RSS function
- LP: #1536474
  * i40evf: create a generic config RSS function
- LP: #1536474
  * i40evf: create a generic get RSS function
- LP: #1536474
  * i40evf: add new fields to store user configuration of RSS
- LP: #1536474
  * i40e: Update error messaging
- LP: #1536474
  * i40e: fix confusing message
- LP: #1536474
  * i40e: make error message more useful
- LP: #1536474
  * i40evf: quoth the VF driver, Nevermore
- LP: #1536474
  * i40evf: allocate queue vectors dynamically
- LP: #1536474
  * i40evf: allocate ring structs dynamically
- LP: #1536474
  * i40e/i40evf: Bump i40e version to 1.4.4 and i40evf to 1.4.1
- LP: #1536474
  * i40e: fix: do not sleep in netdev_ops
- LP: #1536474
  * i40e: remove unused argument
- LP: #1536474
  * i40evf: increase max number of queues
- LP: #1536474
  * i40evf: set real num queues
- LP: #1536474
  * i40evf: remove duplicate string
- LP: #1536474
  * i40e: Detection and recovery of TX queue hung logic moved to
service_task from tx_timeout
- LP: #1536474
  * i40e: Fix memory leaks, sideband filter programming
- LP: #1536474
  * i40evf: don't use atomic allocation
- LP: #1536474
  * i40e: propagate properly
- LP: #1536474
  * i40evf: use correct types
- LP: #1536474
  * i40e: use priv flags to control packet split
- LP: #1536474
  * i40e: Remove separate functions gathering XOFF Rx stats
- LP: #1536474
  * i40e: fix whitespace
- LP: #1536474
  * i40e/i40evf: use logical operator
- LP: #1536474
  * i40e/i40evf: Bump version to 1.4.7 for i40e and 1.4.3 for i40evf
- LP: #1536474
  * i40e: trivial fixes
- LP: #1536474
  * i40e: Fix i40e_print_features() VEB mode output
- LP: #1536474
  * i40e: chomp the 

Re: [Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

Hi Kamal! When will be this bug fixed in precise kernel release?

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.2.0-27.32

---
linux (4.2.0-27.32) wily; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
- LP: #1536867

  [ Andy Whitcroft ]

  * SAUCE: (no-up) add compat_uts_machine= kernel command line override
- LP: #1520627

  [ Colin Ian King ]

  * SAUCE: (no-up) ACPI / tables: Add acpi_force_32bit_fadt_addr option to
force 32 bit FADT addresses
- LP: #1529381

  [ Eric Dumazet ]

  * SAUCE: (no-up) udp: properly support MSG_PEEK with truncated buffers
- LP: #1527902

  [ Guilherme G. Piccoli ]

  * SAUCE: powerpc/eeh: Validate arch in eeh_add_device_early()
- LP: #1486180

  [ Tim Gardner ]

  * SAUCE: (no-up) Revert "[SCSI] libiscsi: Reduce locking contention in
fast path"
- LP: #1517142
  * [Config] Add DRM ast driver to udeb installer image
- LP: #1514711

  [ Upstream Kernel Changes ]

  * net/mlx5e: Re-eanble client vlan TX acceleration
- LP: #1533249
  * net/mlx5e: Fix LSO vlan insertion
- LP: #1533249
  * net/mlx5e: Fix inline header size calculation
- LP: #1533249
  * net: usb: cdc_ncm: Adding Dell DW5812 LTE Verizon Mobile Broadband Card
- LP: #1533118
  * net: usb: cdc_ncm: Adding Dell DW5813 LTE AT Mobile Broadband Card
- LP: #1533118
  * powerpc/eeh: Fix recursive fenced PHB on Broadcom shiner adapter
- LP: #1532942

linux (4.2.0-26.31) wily; urgency=low

  [ Luis Henriques ]

  * Release Tracking Bug
- LP: #1535795
  * Merged back Ubuntu-4.2.0-25.30

 -- Brad Figg   Thu, 21 Jan 2016 18:44:37 -0800

** Changed in: linux (Ubuntu Wily)
   Status: Fix Committed => Fix Released

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Title:
  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

Verified ok in Wily 4.2.0-27.32 (proposed):  The bug can't be reproduced
in 4.2 (a separate upstream fix hides it), but this patch doesn't appear
to break anything and does eliminate an unnecessary double checksum
computation.

** Tags removed: verification-needed-wily
** Tags added: verification-done-wily

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Title:
  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Luis Henriques]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
wily' to 'verification-done-wily'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-wily

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

Thanks for verifying that Pali.  The fix is in the pipeline for all
affected Ubuntu kernels.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

@Kamal: I tested your build 3.13.0-69-generic #112~precise1+lp1527902
and it fixed this problem.

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Title:
  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Luis Henriques]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
vivid' to 'verification-done-vivid'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-vivid

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

Verified ok in Vivid 3.19.0-46.52 (proposed):  The bug can't be
reproduced in 3.19 (a separate upstream fix hides it), but this patch
doesn't appear to break anything and does eliminate an unnecessary
double checksum computation.

** Tags removed: verification-needed-vivid
** Tags added: verification-done-vivid

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Chris J Arges]

** Changed in: linux-lts-trusty (Ubuntu)
   Status: In Progress => Invalid

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

** Also affects: linux (Ubuntu Wily)
   Importance: Undecided
   Status: New

** Also affects: linux-lts-trusty (Ubuntu Wily)
   Importance: Undecided
   Status: New

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Also affects: linux-lts-trusty (Ubuntu Trusty)
   Importance: Undecided
   Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: High
 Assignee: Kamal Mostafa (kamalmostafa)
   Status: In Progress

** Also affects: linux-lts-trusty (Ubuntu Xenial)
   Importance: High
 Assignee: Kamal Mostafa (kamalmostafa)
   Status: In Progress

** Also affects: linux (Ubuntu Vivid)
   Importance: Undecided
   Status: New

** Also affects: linux-lts-trusty (Ubuntu Vivid)
   Importance: Undecided
   Status: New

** Also affects: linux (Ubuntu Precise)
   Importance: Undecided
   Status: New

** Also affects: linux-lts-trusty (Ubuntu Precise)
   Importance: Undecided
   Status: New

** No longer affects: linux-lts-trusty (Ubuntu Trusty)

** No longer affects: linux-lts-trusty (Ubuntu Vivid)

** No longer affects: linux-lts-trusty (Ubuntu Wily)

** No longer affects: linux-lts-trusty (Ubuntu Xenial)

** No longer affects: linux (Ubuntu Precise)

** Also affects: linux-lts-utopic (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu Xenial)
   Status: In Progress => Fix Committed

** Changed in: linux (Ubuntu Wily)
   Status: New => Fix Committed

** Changed in: linux (Ubuntu Vivid)
   Status: New => Fix Committed

** Changed in: linux (Ubuntu Trusty)
   Status: New => Fix Committed

** Changed in: linux-lts-utopic (Ubuntu)
   Status: New => Fix Committed

** Changed in: linux (Ubuntu Trusty)
 Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux (Ubuntu Vivid)
 Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux (Ubuntu Wily)
 Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux-lts-trusty (Ubuntu Precise)
 Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux-lts-utopic (Ubuntu)
 Assignee: (unassigned) => Kamal Mostafa (kamalmostafa)

** Changed in: linux-lts-trusty (Ubuntu Precise)
   Status: New => In Progress

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Ian Morris]

Hello Kamal,

Yes, running, linux-
image-3.13.0-69-generic_3.13.0-69.112~precise1+lp1527902 does indeed
resolve my TFTP issues!

Thanks!

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Kamal Mostafa]

Good news, everyone!  TL;DR:

Pali, I've (finally) managed to reproduce and fix this bug (IPv6 UDP
DNS), with your recommendation of the program 'jdns'.  For reference,
here's my reproduction procedure, on a fresh install of Precise server
(a slight variation on a method Pali developed):

sudo apt-get install dnsmasq
echo listen-address=::1 | sudo tee /etc/dnsmasq.d/ipv6
echo nameserver ::1 | sudo resolvconf -a lo.inet6
sudo /etc/init.d/dnsmasq restart
# fetch and build https://github.com/psi-im/iris/tree/master/src/jdns
./jdns -d -6 uni  google.com ::1 

... kernel versions >= 3.13.0-69.112~precise1 fail with "[1] Error:
Timeout"

Ian, thanks very much for the pointer!  Your mention of Debian bug
808293 led to this pending patch, which does fix this bug (and hopefully
your tftp bug also):  https://patchwork.ozlabs.org/patch/561746/ ("udp:
properly support MSG_PEEK with truncated buffers")

Here's an amd64 test kernel which is 3.13.0-69.112~precise1 + a simple
backport of that patch.   Pali, this passes the 'jdns' test.  Can you
confirm that it resolves your original issue too?  Ian, does it also fix
your tftp problem?

http://kernel.ubuntu.com/~kamal/lp1527902/linux-
image-3.13.0-69-generic_3.13.0-69.112~precise1+lp1527902_amd64.deb



** Changed in: linux (Ubuntu)
 Assignee: Joseph Salisbury (jsalisbury) => Kamal Mostafa (kamalmostafa)

** Changed in: linux-lts-trusty (Ubuntu)
 Assignee: Joseph Salisbury (jsalisbury) => Kamal Mostafa (kamalmostafa)

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Title:
  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

So it is same error code for recvfrom() on UDP packet. It is possible
that it is same problem...

Anyway, currently I cannot test next kernel, so if you cannot reproduce
that bug, you need to wait some time after I could test next kernel
build...

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Ian Morris]

I am also seeing problems with UDP ... in my case, TFTP failures. Error
message is " service tftp, recvfrom: Resource temporarily unavailable
(errno = 11)" in syslog. I suspect this is the same issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808293


** Bug watch added: Debian Bug tracker #808293
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808293

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Ian Morris]

I appreciate we might not be chasing the same bug ... so use with caution but 
here's some extra data points
3.13.0-68 - TFTP works
3.13.0-69.112~lp1527902Commitcc22adac - TFTP broken.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

I built the next test kernel, up to the following commit:
cc22adac97a74e19fa22f8b1f3ea50827c1b5e3f

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1527902

Can you test that kernel and report back if it has the bug or not? I
will build the next test kernel based on your test results.

Thanks in advance

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

Sorry for the delay, I was away for holiday break.  I'll build the next
test kernel and post it shortly.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

I tested kernel 3.13.0-68-generic #111~Commit40c4e87e7 and this is good.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

Now I tested also v3.13.11-ckt32-trusty kernel and this is bad.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

Looks like that program dig is not affected, so not all stub resolvers
are non working.

Kopete uses libiris xmpp library which uses jdns resolver. It is 100%
reproducable.

I tested also new upstream 4.x kernels and they do not have this
problem. Only ubuntu kernels >= 3.13.0-69.

If you need to test jdns library, upstream project has also example dns lookup 
cmdline tool in git repo:
https://github.com/psi-im/iris/tree/master/src/jdns/tools/jdns

(Call it with arg "-6" against some IPv6 DNS server)

I tested it and it reacts exactly same as Kopete, on 3.13.0-69 kernel
(and above) just do not receive UDP IPv6 packets. As I wrote in
description strace show that every recvfrom() calls just return -EAGAIN.
But wireshark see that packets was received.

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

We may want to perform a reverse bisect as well, since there seems to be
a fix in the latest mainline kernel.  Could you test the latest upstream
3.13 stable kernel as well, maybe the fix came down through a stable
update.  The latest upstream stable kernel can be downloaded from:

http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11-ckt32-trusty/

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

I started a kernel bisect between 3.13.0-68 and 3.13.0-69. The kernel
bisect will require testing of about 7-10 test kernels.

I built the first test kernel, up to the following commit:
40c4e87e71354ccad701b7f36e522424e6504bca

The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1527902

Can you test that kernel and report back if it has the bug or not?  I
will build the next test kernel based on your test results.

Thanks in advance

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Andy Whitcroft]

I am able to perform dns lookups on a P+T box with -74 (and the OR has
separatly confirmed -74 as affected), so this appears to not be
systemic:

mru@grovel-x-p64p5:~$ cat /proc/version_signature 
Ubuntu 3.13.0-74.118~precise1-generic 3.13.11-ckt30

mru@grovel-x-p64p5:~$ dig  www.google.com @2001:4860:4860::

; <<>> DiG 9.8.1-P1 <<>>  www.google.com @2001:4860:4860::
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33031
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.google.com.IN  

;; ANSWER SECTION:
www.google.com. 299 IN  2a00:1450:4009:811::2004

;; Query time: 39 msec
;; SERVER: 2001:4860:4860::#53(2001:4860:4860::)
;; WHEN: Wed Dec 23 19:17:07 2015
;; MSG SIZE  rcvd: 60

mru@grovel-x-p64p5:~$ sudo tcpdump -n host 2001:4860:4860:: 
   
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
19:19:51.930966 IP6 2001:470:6973:2:18f8:278f:cd6d:654e.52306 > 
2001:4860:4860::.53: 55720+ ? www.google.com. (32)
19:19:51.971448 IP6 2001:4860:4860::.53 > 
2001:470:6973:2:18f8:278f:cd6d:654e.52306: 55720 1/0/0  
2a00:1450:4009:811::2004 (60)

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

Now I tested version 3.13.0-69.112~precise1 from https://launchpad.net
/~canonical-kernel-team/+archive/ubuntu/ppa/+packages?field.name_filter
=linux-lts-trusty_filter=_filter=precise and
it has same problem as 3.13.0-71. So this bug was introduced somewhere
between -68 and -69.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

** Tags added: regression-update trusty

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

Ok, a new lts-backport-trusty test kernel is available here:

http://kernel.ubuntu.com/~jsalisbury/lp1527902/

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

For reproducing just try to use Kopete IM client and try to connect to
some jabber server. Kopete must use IPv6 recursive DNS server for
translating jabber SRV or A records. DNS server address is read from
standard file /etc/resolv.conf.

So if you do not have IPv6 connectivity, you can you start some
recursive (or forward) DNS server on IPv6 localhost and set nameserver
::1 in /etc/resolv.conf. This is quick hack, but should work.

I see that NetworkManager on Ubuntu is already using dnsmasq (as
forwarder), but does not have enabled IPv6 support on localhost. It
automatically add "nameserver 127.0.0.1" line into /etc/resolv.conf.

To tell dnsmasq to listen also on IPv6 localhost add configuration like:
$ echo listen-address=::1 > /etc/NetworkManager/dnsmasq.d/ipv6
(and reboot)

And set "nameserver ::1" in /etc/resolv.conf (note that NetworkManager
is changing that file when reconnecting...)

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

Actually that last test kernel for specific to Trusty proper.  I'll
build one more, but using the trusty-lts repo.

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  3.13.0-71: IPv6 UDP DNS packets are not received

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

thanks for testing , pali.  I'm going to build one more test kernel.  If
that does not fix the bug, we'll have to perform a bisect.

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Pali]

Now I tested your last build and it does *not* fix this bug :-(

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

I built a Trusty test kernel with a revert of the three commits
mentioned in comment: #1.  The test kernel can be downloaded from:

http://kernel.ubuntu.com/~jsalisbury/lp1527902/

Can you test this kernel and see if it resolves this bug?  If it does,
then we can narrow which of those three commit is the cause.  If the bug
still exits, we will probably want to perform a kernel bisect.

Note, with this test kernel, you need to install both the linux-image
and linux-image-extra .deb packages.

Thanks in advance!

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

Hi Pali,

I'd like to try and reproduce this bug.  Can you list the steps I would
need to perform to reproduce the bug?  Would it just be to use the
Kopete client and try to connect to a jabber server?

Also, do I need to do some network reconfiguration?  I am currently
using IPv4, and do not have IPv6 configured.

I'm also going to build a test kernel for you to try with the following three 
commits reverted:
538c22c net/ipv6: Correct PIM6 mrt_lock handling
483d538 [stable-only] net: add length argument to skb_copy_and_csum_datagram_iov
16b7201 ipv6: fix exthdrs offload registration in out_rt path

If that does not fix the issue, we can perform a kernel bisect to
identify the exact commit that introduced the regression.


** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux-lts-trusty (Ubuntu)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu)
   Status: Triaged => In Progress

** Changed in: linux-lts-trusty (Ubuntu)
   Status: Triaged => In Progress

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

** Tags added: per

** Tags removed: per
** Tags added: performing-bisect

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Joseph Salisbury]

** Changed in: linux-lts-trusty (Ubuntu)
   Status: New => Triaged

** Changed in: linux-lts-trusty (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu)
   Status: New => Triaged

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

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[Bug 1527902] Re: 3.13.0-71: IPv6 UDP DNS packets are not received

[Andy Whitcroft]

** Tags added: kernel-da-key

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