** Changed in: network-manager (Ubuntu Trusty)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/1609898
Title:
dhclient
This bug was fixed in the package network-manager -
1.2.2-0ubuntu0.16.04.3
---
network-manager (1.2.2-0ubuntu0.16.04.3) xenial; urgency=medium
* debian/tests/wpa-dhclient: Don't assume that the IPv6 prefix length from
the DHCP server is /64. (LP: #1609898)
network-manager
After further checking, comcast is sending them, my machine is just not
seeing them... Will file a separate bug.
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I have confirmed that the machine is accepting router advertisements,
and that comcast is not sending them.
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Title:
With this fix, my IPv6 service from Comcast broke.
Specifically, they hand out an IP on the /64 via dhcpv6, with the
default gateway being an IP on the same /64, along with an IA /56 for
the customer to use locally.
Adding the default route fails because there is no route to said gateway
(since
This bug was fixed in the package network-manager - 1.2.4-0ubuntu1
---
network-manager (1.2.4-0ubuntu1) yakkety; urgency=medium
[ Aron Xu ]
* Imported Upstream version 1.2.4
* Update patches for new upstream release:
-
This bug was fixed in the package isc-dhcp - 4.3.3-5ubuntu14
---
isc-dhcp (4.3.3-5ubuntu14) yakkety; urgency=medium
* Add an initramfs-tools hook and ship everything we need to run dhclient in
the initramfs. This is necessary for proper IPv6 netboot support.
(LP: #1621507)
** Changed in: network-manager (Ubuntu Xenial)
Importance: Undecided => Medium
** Changed in: network-manager (Ubuntu Trusty)
Importance: Undecided => Medium
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http://autopkgtest.ubuntu.com/packages/n/network-manager succeeds again
on xenial, thus verified.
** Tags removed: verification-done-precise verification-done-trusty
verification-done-xenial verification-done-yakkety verification-needed
** Tags added: verification-done
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Hello Dan, or anyone else affected,
Accepted network-manager into xenial-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/network-
manager/1.2.2-0ubuntu0.16.04.3 in a few hours, and then in the -proposed
repository.
Please help us by testing this new
Cherry-picked into xenial branch.
** Changed in: network-manager (Ubuntu Xenial)
Status: Triaged => Fix Committed
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This bug was fixed in the package isc-dhcp - 4.3.3-5ubuntu12.3
---
isc-dhcp (4.3.3-5ubuntu12.3) xenial; urgency=medium
[ Mathieu Trudel-Lapierre ]
* debian/isc-dhcp-client.install: install new files for initramfs-tools
to their proper locations; from debian/initramfs-tools.
This bug was fixed in the package isc-dhcp - 4.2.4-7ubuntu12.7
---
isc-dhcp (4.2.4-7ubuntu12.7) trusty; urgency=medium
* Don't assume IPv6 prefix length of 64 (LP: #1609898).
Pulled from debian commit c347ab8a43587164486ce1f104eedfd638594e59.
-- Dan Streetman
This bug was fixed in the package isc-dhcp - 4.1.ESV-R4-0ubuntu5.11
---
isc-dhcp (4.1.ESV-R4-0ubuntu5.11) precise; urgency=medium
* Don't assume IPv6 prefix length of 64 (LP: #1609898).
Pulled from debian commit c347ab8a43587164486ce1f104eedfd638594e59.
-- Dan Streetman
Also note that dnsmasq can act as both a dhcpv6 server as well as
serving router advertisements.
The ISC dhcp server only does dhcpv6, it does not have support (that I
know of) for serving router advertisements.
If you do want your clients to use slaac addresses in addition to the dhcpv6
For anyone reading this because the isc-dhcp-client update broke their
DHCPv6 network:
First, I assume you're running a DHCPv6 server to provide the ipv6
addresses to your clients. If you do not have any Router Advertisement
service configured on your server, the easiest thing to do is use
Adjusted the network-manager test for yakkety: https://git.launchpad.net
/~network-manager/network-manager/+git/ubuntu/commit/?id=756271bf57
** Changed in: network-manager (Ubuntu Yakkety)
Importance: Undecided => Medium
** Changed in: network-manager (Ubuntu Yakkety)
Status: New =>
** Description changed:
[Impact]
clients who get an ipv6 address from a dhcpv6 server assume the address
has a /64 prefix, but that is not necessarily true, and if the subnet is
different than /64 those clients will not be able to reach other
addresses in that /64 prefix because the
Unfortunately, while I initially put in the bug description that there
was no regresssion potential, I've been made aware that some network
configurations rely on the previous (incorrect) behavior of the dhcp
client to set a prefix len of /64. Such configurations will break when
the dhcp clients
@arges, yep the attached lp1609898-nm-[trusty|xenial|yakkety].debdiff
patches update network-manager's test script to the new behavior. I can
pull the patches out of the debdiffs, if that's easier.
I did a brief search in the network-manager tests and didn't find any
other place that looks like
@ddstreet,
Can you propose a patch for network manager to adjust test cases to this new
behavior? I'm wondering if there are other parts of network-manager that may
expect /64 instead of /128 and break existing users.
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The attached debdiffs lp1609898-nm-[trusty|xenial|yakkety].debdiff patch
network-manager's debian/tests/wpa-dhclient test to use /128 instead of
/64 for its DHCPv6 address test.
Note it leaves the ipv6 Router Advertisement provided addresses with
/64, as that prefix length is provided to the
** Patch added: "lp1609898-nm-yakkety.debdiff"
https://bugs.launchpad.net/ubuntu/precise/+source/network-manager/+bug/1609898/+attachment/4741543/+files/lp1609898-nm-yakkety.debdiff
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** Also affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Changed in: network-manager (Ubuntu Precise)
Status: New => Invalid
** Patch added: "debdiff to fix network manager test in trusty"
** Patch added: "lp1609898-nm-xenial.debdiff"
https://bugs.launchpad.net/ubuntu/precise/+source/network-manager/+bug/1609898/+attachment/4741542/+files/lp1609898-nm-xenial.debdiff
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tested on trusty:
using isc-dhcp-client 4.2.4-7ubuntu12.6, bug exists; dhcpv6 prefix is
set to /64.
using isc-dhcp-client 4.2.4-7ubuntu12.7, bug is fixed; dhcpv6 prefix is
set correctly to /128.
** Tags removed: verification-needed
** Tags added: verification-done-trusty
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tested on precise:
using isc-dhcp-client 4.1.ESV-R4-0ubuntu5.10, bug exists; dhcpv6 prefix
is set to /64.
using isc-dhcp-client 4.1.ESV-R4-0ubuntu5.11, bug is fixed; dhcpv6
prefix is set correctly to /128.
** Tags added: verification-done-precise
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I assume you mean these 2 failing tests, below; that's correct behavior
now, the tests should be changed to expect a /128 DHCPv6 address instead
of a /64 DHCPv6 address.
==
FAIL: test_open_b_ip6_dhcp (__main__.T)
Open network,
The change in isc-dhcp for Xenial may be causing a NetworkManager test
regression.
http://autopkgtest.ubuntu.com/packages/n/network-manager/xenial/amd64
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Hello Dan, or anyone else affected,
Accepted isc-dhcp into trusty-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/isc-
dhcp/4.2.4-7ubuntu12.7 in a few hours, and then in the -proposed
repository.
Please help us by testing this new package. See
tested on yakkety:
using isc-dhcp-client 4.3.3-5ubuntu13, bug exists; dhcpv6 prefix is set
to /64.
using isc-dhcp-client 4.3.3-5ubuntu13.1, bug is fixed; dhcpv6 prefix is
set correctly to /128.
** Tags added: verification-done-yakkety
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tested on xenial:
using isc-dhcp-client 4.3.3-5ubuntu12.1, bug exists; dhcpv6 prefix is
set to /64.
using isc-dhcp-client 4.3.3-5ubuntu12.2, bug is fixed; dhcpv6 prefix is
correctly set to /128.
** Tags removed: verification-needed
** Tags added: verification-done-xenial
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Hello Dan, or anyone else affected,
Accepted isc-dhcp into xenial-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/isc-
dhcp/4.3.3-5ubuntu12.2 in a few hours, and then in the -proposed
repository.
Please help us by testing this new package. See
This was already uploaded for yakkety a while ago:
https://launchpad.net/ubuntu/+source/isc-dhcp/4.3.3-5ubuntu13.1
It is stuck in proposed (http://people.canonical.com/~ubuntu-archive
/proposed-migration/update_excuses.html#isc-dhcp) due to some
NetworkManager test regression. I retried those and
I sponsored the SRUs to the review queues. Unsubscribing sponsors now.
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Title:
dhclient incorrectly assumes a /64
** Changed in: isc-dhcp (Debian)
Status: Unknown => Fix Released
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Title:
dhclient incorrectly assumes a /64
** Bug watch added: Debian Bug tracker #684009
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684009
** Also affects: isc-dhcp (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684009
Importance: Unknown
Status: Unknown
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** Changed in: isc-dhcp (Ubuntu Precise)
Importance: Undecided => Medium
** Changed in: isc-dhcp (Ubuntu Trusty)
Importance: Undecided => Medium
** Changed in: isc-dhcp (Ubuntu Xenial)
Importance: Undecided => Medium
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> In what circumstances do dhcpv6 servers hand out an IPv6 address without also
> reporting
> the prefix length the client should use? Something seems wrong here. (Is it
> me? :)
unfortunately the dhcpv6 spec (RFC 3315) doesn't provide a way for a
dhcpv6 server to tell a client what the
In what circumstances do dhcpv6 servers hand out an IPv6 address without
also reporting the prefix length the client should use? Something seems
wrong here. (Is it me? :)
Thanks
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The attachment "lp1609898-precise.debdiff" seems to be a debdiff. The
ubuntu-sponsors team has been subscribed to the bug report so that they
can review and hopefully sponsor the debdiff. If the attachment isn't a
patch, please remove the "patch" flag from the attachment, remove the
"patch" tag,
yakkety build also at ppa
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Title:
dhclient incorrectly assumes a /64 ipv6 prefix
Status in isc-dhcp package in
** Patch added: "lp1609898-yakkety.debdiff"
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1609898/+attachment/4714232/+files/lp1609898-yakkety.debdiff
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** Also affects: isc-dhcp (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: isc-dhcp (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: isc-dhcp (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: isc-dhcp (Ubuntu
Patched builds for precise, trusty, xenial at ppa:
https://launchpad.net/~ddstreet/+archive/ubuntu/lp1609898
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Title:
** Patch added: "lp1609898-xenial.debdiff"
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1609898/+attachment/4714183/+files/lp1609898-xenial.debdiff
** Changed in: isc-dhcp (Ubuntu)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: isc-dhcp (Ubuntu)
** Patch added: "lp1609898-trusty.debdiff"
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1609898/+attachment/4714182/+files/lp1609898-trusty.debdiff
** Patch removed: "lp1609898.debdiff"
** Patch added: "lp1609898-precise.debdiff"
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1609898/+attachment/4714181/+files/lp1609898-precise.debdiff
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** Patch added: "lp1609898.debdiff"
https://bugs.launchpad.net/ubuntu/+source/isc-dhcp/+bug/1609898/+attachment/4714179/+files/lp1609898.debdiff
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