** Description changed:
[impact]
- when a networkd interface is configured with LinkLocalAddressing=no,
- networkd still assigns a link-local address to it
+ in some situations when a networkd interface is configured with
+ LinkLocalAddressing=no, networkd still assigns a link-local address to
+ it
[test case]
see comment 3.
note I was only able to reproduce this at boot time; if the vlan
interface is removed (i.e. 'sudo ip l del pppoe') and then networkd
restarted, the pppoe interface is created and does not have a link-local
- address.
+ address. This is due to this bug being triggered by timing, as a vlan
+ interface is raised by the kernel when its parent interface is raised,
+ in this case by networkd itself.
[regression potential]
- this moves the point when ipv6ll is configured; regressions would most
- likely involve failure to correctly configure an ipv6ll address when
- desired.
+ this changes how ipv6ll addresses are managed and dropped, as well as
+ changing when foreign addresses are dropped (later in config process).
+ Any regressions would likely be around incorrectly setting ipv6ll
+ addresses, or complete failure to complete interface configuration.
+
+ [scope]
+
+ this is fixed upstream by:
+ https://github.com/systemd/systemd/pull/13927
+
+ and also requires the upstream PR referenced in the original description:
+ upstream patch: https://github.com/systemd/systemd/pull/13565
+
+ this is required for focal (uploaded already), eoan, and bionic. It may
+ be required for xenial.
[other info]
- this bug was attempted to be fixed by
'debian/patches/networkd-honour-LinkLocalAddressing.patch' from upstream issue
9890, using a commit that does not correctly fix the issue and was never
accepted upstream:
- https://github.com/systemd/systemd/issues/9890#issuecomment-455168751
-
- this SRU completely reverts that patch, and adds the correct fix which
- was merged upstream:
-
https://github.com/systemd/systemd/commit/0e2fdb83bb5e22047e0c7cc058b415d0e93f02cf
-
- that commit is already included in Eoan so this sru is needed only for
- Disco.
+ Note, the original description below is incorrect, the issue/patch it
+ references is not enough to fix this issue.
original description:
--
upstream issue: https://github.com/systemd/systemd/issues/12886
upstream patch: https://github.com/systemd/systemd/pull/13565
The upstream fix will be available in systemd 244.
Backport please. Thanks.
** Changed in: systemd (Ubuntu Eoan)
Status: Incomplete => In Progress
** Changed in: systemd (Ubuntu Bionic)
Status: Incomplete => In Progress
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https://bugs.launchpad.net/bugs/1845909
Title:
[SRU] IPv6 link local address is assigned even when
LinkLocalAddressing=no|ipv4
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