Public bug reported:
[impact]
if the 'disable_ipv6' procfs setting is disabled, and networkd is
configured with ipv6 networking, networkd will not enable ipv6 via the
procfs setting unless the interface mtu is also set to a custom value,
that doesn't match the current interface mtu.
[test case]
TBD
[regression potential]
as this adjusts when the procfs 'disable_ipv6' setting is changed, the
regression potential could cause failure to properly set/create ipv6
addresses, or to leave ipv6 disabled entirely.
[scope]
This is needed in Bionic and Eoan.
the commit to fix this is 482efedc081b0c4bf2e77a3dee6b979d9c9a5765 which
is included starting in v243, so it is included already in Focal.
Ignoring Disco, as it is EOL next week.
This problem was introduced by commit
44b598a1c9d11c23420a5ef45ff11bcb0ed195eb, which was included starting in
v239, but also backported to Bionic in bug 1850704.
[other info]
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: Fix Released
** Affects: systemd (Ubuntu Bionic)
Importance: Medium
Assignee: Dan Streetman (ddstreet)
Status: In Progress
** Affects: systemd (Ubuntu Disco)
Importance: Undecided
Status: Won't Fix
** Affects: systemd (Ubuntu Eoan)
Importance: Medium
Assignee: Dan Streetman (ddstreet)
Status: In Progress
** Also affects: systemd (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: systemd (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: systemd (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: systemd (Ubuntu Disco)
Status: New => Won't Fix
** Changed in: systemd (Ubuntu Eoan)
Status: New => In Progress
** Changed in: systemd (Ubuntu Bionic)
Status: New => In Progress
** Changed in: systemd (Ubuntu)
Status: New => Fix Released
** Changed in: systemd (Ubuntu Eoan)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu Bionic)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu Eoan)
Assignee: (unassigned) => Dan Streetman (ddstreet)
** Changed in: systemd (Ubuntu Bionic)
Assignee: (unassigned) => Dan Streetman (ddstreet)
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https://bugs.launchpad.net/bugs/1859862
Title:
networkd doesn't re-enable ipv6 unless mtu is set
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