As I suggested in bug 1634176, I think that we can extend the 'ip=' parameter to work as it has a 'autoconf' parameter in it, which indicates the type of "auto" configuration to do:
klibc documents the previous ip= syntax at README.ipconfig [1]. <client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf> My suggestion is to extend the 'autoconf' parameter. Previously the supported documented values were 'rarp', 'bootp', 'both', 'dhcp', 'all', 'off', 'static', 'none'. I suggest we add 'dhcp6' to the the list. We could also support 'dhcp4,dhcp6' or 'dhcp+dhcp6' indicating both should be tried or possibly dhcp6 if and only if dhcp4 failed. I think though, for the immediate use case that just adding 'dhcp6' to the autoconf types would suffice. -- 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/1621507 Title: initramfs-tools configure_networking() fails to dhcp ipv6 addresses Status in MAAS: Fix Released Status in initramfs-tools package in Ubuntu: In Progress Status in isc-dhcp package in Ubuntu: Fix Released Status in klibc package in Ubuntu: Won't Fix Status in open-iscsi package in Ubuntu: Fix Released Status in initramfs-tools source package in Xenial: Triaged Status in isc-dhcp source package in Xenial: Fix Released Status in klibc source package in Xenial: Won't Fix Status in open-iscsi source package in Xenial: Fix Released Status in initramfs-tools source package in Yakkety: In Progress Status in isc-dhcp source package in Yakkety: Fix Released Status in klibc source package in Yakkety: Won't Fix Status in open-iscsi source package in Yakkety: Fix Released Status in klibc package in Debian: New Bug description: initramfs' configure_networking function uses ipconfig to configure the network. ipconfig does not support dhcpv6. See: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=627164 Related bugs: * bug 1229458: grub2 needed changes * bug 1621615: network not configured when ipv6 netbooted into cloud-init [Impact] It is not possible to netboot Ubuntu with a network-based root filesystem in an ipv6-only environment. Anyone wanting to netboot in an ipv6-only environment is affected. These uploads address this by replacing the one-off klibc dhcp client (IPv4-only) with the defacto standard isc-dhcp-client, and thereby provide both ipv6 and ipv4 DHCP configuration. [Test Case] See Bug 1229458. Configure radvd, dhcpd, and tftpd for your ipv6-only netbooting world. Pass the boot process an ipv6 address to talk to, and see it fail to configure the network. [Regression Potential] 1) This increases the uncompressed initramfs size by approximately 500KB, since isc-dhcp-client is added, but klibc is still needed for some other things, and is therefore present. On systems with a very small /boot partition, this could result in failure to upgrade the initramfs. 2) In at least some cases, DHCP network configuration shifts from klibc's ipconfig to isc-dhcp-client's dhclient. This should be of minimal risk, as isc-dhcp-client is in very very widespread use. In the event of a regression, network boot would fail, but the prior kernel should still be bootable. To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1621507/+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
