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-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to isc-dhcp in Ubuntu. https://bugs.launchpad.net/bugs/1937110 Title: dhcp option 121 & 249 Status in subiquity: New Status in isc-dhcp package in Ubuntu: Fix Released Status in isc-dhcp source package in Focal: Fix Released Status in isc-dhcp source package in Jammy: Fix Released Bug description: [Impact] * DHCP classless static routes aren't applied by dhclient at the initramfs (e.g., ip=dhcp). * This happens as rfc3442-classless-routes is not copied to /etc/dhcp/dhclient-exit-hooks.d/ in the initramfs. * On Jammy, if such DHCP option(s) are present in the DHCP server response, the DHCP client ignores the 'routers' option from the server, thus leaving no routes configured. * On Focal, the older code still adds 'routers', which is slightly better, but still does not add the classless static routes. [Test Plan] * Use LXD container/VMs for DHCP server/client, configure the DHCP server with option 121, and some sample classless static routes. (see comments #12/jammy and #13/focal). [Regression Potential] * Acquisition of DHCP leases/routes at initramfs with ip=dhcp. * The code/script is not new, and is exercised normally during on rootfs (ie, post-initramfs) when dhclient is run. * It's also been in the initramfs in Kinetic already, since on Aug 2022; giving it tests. [Original Description] Hello, I'm running into issues with subiquity on a cloud provider. The cloud provider is using an on-link L3 gateway. His DHCP response looks like this: OPTION: 53 ( 1) DHCP message type 5 (DHCPACK) OPTION: 54 ( 4) Server identifier 172.31.1.1 OPTION: 51 ( 4) IP address leasetime 86400 (24h) OPTION: 1 ( 4) Subnet mask 255.255.255.255 OPTION: 3 ( 4) Routers 172.31.1.1 OPTION: 6 ( 12) DNS server .... OPTION: 121 ( 14) Classless Static Route 20ac1f0101000000 ....... 0000ac1f0101 ...... OPTION: 249 ( 14) MSFT - Classless route 20ac1f0101000000 ....... 0000ac1f0101 ...... Im booting the subiquity process with an patched ipxe (https://github.com/ipxe/ipxe/pull/104) like this: #!ipxe kernel .../vmlinuz initrd=initrd root=/dev/ram0 ramdisk_size=1500000 ip=dhcp url=https://cdimage.ubuntu.com/ubuntu-server/focal/daily-live/current/focal-live-server-amd64.iso autoinstall ds=nocloud-net;s=.../...-ad-78/ cloud-config-url=/dev/null initrd .../initrd boot initrd/vmlinuz is extracted right out of focal-live-server-amd64.iso Sadly subiquity is stuck with a broken network (because of missing dhcp option 121/249 support). It happens when its running the /init from the kernel right after kernel is booted, i guess even before the subiquity is started(?). After further debugging, it looks like the provided kernel 5.4.80 #90 Ubuntu, is using busybox 1.30.1-4ubuntu~6.3 which includes isc- dhclient-4.4.1 which is lacking the given options. Would be awesome if this could be fixed.. maybe just a simple busybox compile option? To manage notifications about this bug go to: https://bugs.launchpad.net/subiquity/+bug/1937110/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
