** Also affects: nplan (Ubuntu Xenial)
Importance: Undecided
Status: New
** Description changed:
+ [Impact]
+ This is a bug tracking a regression in netplan 0.25 and later, fixed directly
in the development release as of netplan 0.28. This does not affect stable
releases in any way; but tracked as part of an update included in the SRU. The
regressing code never made it to stable releases.
+
+ [Test case]
+ n/a; see bug 1655440 for test plan on IPv6 "AcceptRA" feature.
+
+ [Regression Potential]
+ n/a, see bug 1655440.1655440
+
+ ---
+
Prior to the switch to nplan, systems (in my case containers) would DHCP
for IPv4 and let the kernel do IPv6 auto-configuration whenever a router
advertisement comes in.
That's the exact same behavior we see on every single other Linux
distribution, but ever since the switch to nplan by default in Ubuntu,
we're not getting an IPv6 address anymore when a RA reaches the
container.
This was spotted by a new Jenkins test we're running which ensures that
every single image we have for LXD will start and get a working IPv4
(through DHCP) and IPv6 address (through RA).
-
```
PASS: alpine-33-priv has working IPv4 and IPv6 connectivty
PASS: alpine-33-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-34-priv has working IPv4 and IPv6 connectivty
PASS: alpine-34-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-35-priv has working IPv4 and IPv6 connectivty
PASS: alpine-35-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-36-priv has working IPv4 and IPv6 connectivty
PASS: alpine-36-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-edge-priv has working IPv4 and IPv6 connectivty
PASS: alpine-edge-unpriv has working IPv4 and IPv6 connectivty
PASS: archlinux-priv has working IPv4 and IPv6 connectivty
PASS: archlinux-unpriv has working IPv4 and IPv6 connectivty
PASS: centos-6-priv has working IPv4 and IPv6 connectivty
PASS: centos-6-unpriv has working IPv4 and IPv6 connectivty
PASS: centos-7-priv has working IPv4 and IPv6 connectivty
PASS: centos-7-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-buster-priv has working IPv4 and IPv6 connectivty
PASS: debian-buster-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-jessie-priv has working IPv4 and IPv6 connectivty
PASS: debian-jessie-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-sid-priv has working IPv4 and IPv6 connectivty
PASS: debian-sid-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-stretch-priv has working IPv4 and IPv6 connectivty
PASS: debian-stretch-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-wheezy-priv has working IPv4 and IPv6 connectivty
PASS: debian-wheezy-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-24-priv has working IPv4 and IPv6 connectivty
PASS: fedora-24-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-25-priv has working IPv4 and IPv6 connectivty
PASS: fedora-25-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-26-priv has working IPv4 and IPv6 connectivty
PASS: fedora-26-unpriv has working IPv4 and IPv6 connectivty
PASS: gentoo-priv has working IPv4 and IPv6 connectivty
PASS: gentoo-unpriv has working IPv4 and IPv6 connectivty
PASS: opensuse-422-priv has working IPv4 and IPv6 connectivty
PASS: opensuse-422-unpriv has working IPv4 and IPv6 connectivty
PASS: opensuse-423-priv has working IPv4 and IPv6 connectivty
PASS: opensuse-423-unpriv has working IPv4 and IPv6 connectivty
PASS: oracle-6-priv has working IPv4 and IPv6 connectivty
PASS: oracle-6-unpriv has working IPv4 and IPv6 connectivty
PASS: oracle-7-priv has working IPv4 and IPv6 connectivty
PASS: oracle-7-unpriv has working IPv4 and IPv6 connectivty
PASS: plamo-5x-priv has working IPv4 and IPv6 connectivty
PASS: plamo-5x-unpriv has working IPv4 and IPv6 connectivty
PASS: plamo-6x-priv has working IPv4 and IPv6 connectivty
PASS: plamo-6x-unpriv has working IPv4 and IPv6 connectivty
PASS: sabayon-priv has working IPv4 and IPv6 connectivty
PASS: sabayon-unpriv has working IPv4 and IPv6 connectivty
FAIL: ubuntu-artful-priv doesn't have an IPv6 address
FAIL: ubuntu-artful-unpriv doesn't have an IPv6 address
PASS: ubuntu-core-16-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-core-16-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-precise-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-precise-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-trusty-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-trusty-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-xenial-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-xenial-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-zesty-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-zesty-unpriv has working IPv4 and IPv6 connectivty
Test failed
```
** Description changed:
[Impact]
This is a bug tracking a regression in netplan 0.25 and later, fixed directly
in the development release as of netplan 0.28. This does not affect stable
releases in any way; but tracked as part of an update included in the SRU. The
regressing code never made it to stable releases.
[Test case]
n/a; see bug 1655440 for test plan on IPv6 "AcceptRA" feature.
[Regression Potential]
- n/a, see bug 1655440.1655440
+ n/a, see bug 1655440.
---
Prior to the switch to nplan, systems (in my case containers) would DHCP
for IPv4 and let the kernel do IPv6 auto-configuration whenever a router
advertisement comes in.
That's the exact same behavior we see on every single other Linux
distribution, but ever since the switch to nplan by default in Ubuntu,
we're not getting an IPv6 address anymore when a RA reaches the
container.
This was spotted by a new Jenkins test we're running which ensures that
every single image we have for LXD will start and get a working IPv4
(through DHCP) and IPv6 address (through RA).
```
PASS: alpine-33-priv has working IPv4 and IPv6 connectivty
PASS: alpine-33-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-34-priv has working IPv4 and IPv6 connectivty
PASS: alpine-34-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-35-priv has working IPv4 and IPv6 connectivty
PASS: alpine-35-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-36-priv has working IPv4 and IPv6 connectivty
PASS: alpine-36-unpriv has working IPv4 and IPv6 connectivty
PASS: alpine-edge-priv has working IPv4 and IPv6 connectivty
PASS: alpine-edge-unpriv has working IPv4 and IPv6 connectivty
PASS: archlinux-priv has working IPv4 and IPv6 connectivty
PASS: archlinux-unpriv has working IPv4 and IPv6 connectivty
PASS: centos-6-priv has working IPv4 and IPv6 connectivty
PASS: centos-6-unpriv has working IPv4 and IPv6 connectivty
PASS: centos-7-priv has working IPv4 and IPv6 connectivty
PASS: centos-7-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-buster-priv has working IPv4 and IPv6 connectivty
PASS: debian-buster-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-jessie-priv has working IPv4 and IPv6 connectivty
PASS: debian-jessie-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-sid-priv has working IPv4 and IPv6 connectivty
PASS: debian-sid-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-stretch-priv has working IPv4 and IPv6 connectivty
PASS: debian-stretch-unpriv has working IPv4 and IPv6 connectivty
PASS: debian-wheezy-priv has working IPv4 and IPv6 connectivty
PASS: debian-wheezy-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-24-priv has working IPv4 and IPv6 connectivty
PASS: fedora-24-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-25-priv has working IPv4 and IPv6 connectivty
PASS: fedora-25-unpriv has working IPv4 and IPv6 connectivty
PASS: fedora-26-priv has working IPv4 and IPv6 connectivty
PASS: fedora-26-unpriv has working IPv4 and IPv6 connectivty
PASS: gentoo-priv has working IPv4 and IPv6 connectivty
PASS: gentoo-unpriv has working IPv4 and IPv6 connectivty
PASS: opensuse-422-priv has working IPv4 and IPv6 connectivty
PASS: opensuse-422-unpriv has working IPv4 and IPv6 connectivty
PASS: opensuse-423-priv has working IPv4 and IPv6 connectivty
PASS: opensuse-423-unpriv has working IPv4 and IPv6 connectivty
PASS: oracle-6-priv has working IPv4 and IPv6 connectivty
PASS: oracle-6-unpriv has working IPv4 and IPv6 connectivty
PASS: oracle-7-priv has working IPv4 and IPv6 connectivty
PASS: oracle-7-unpriv has working IPv4 and IPv6 connectivty
PASS: plamo-5x-priv has working IPv4 and IPv6 connectivty
PASS: plamo-5x-unpriv has working IPv4 and IPv6 connectivty
PASS: plamo-6x-priv has working IPv4 and IPv6 connectivty
PASS: plamo-6x-unpriv has working IPv4 and IPv6 connectivty
PASS: sabayon-priv has working IPv4 and IPv6 connectivty
PASS: sabayon-unpriv has working IPv4 and IPv6 connectivty
FAIL: ubuntu-artful-priv doesn't have an IPv6 address
FAIL: ubuntu-artful-unpriv doesn't have an IPv6 address
PASS: ubuntu-core-16-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-core-16-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-precise-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-precise-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-trusty-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-trusty-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-xenial-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-xenial-unpriv has working IPv4 and IPv6 connectivty
PASS: ubuntu-zesty-priv has working IPv4 and IPv6 connectivty
PASS: ubuntu-zesty-unpriv has working IPv4 and IPv6 connectivty
Test failed
```
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1717404
Title:
IPv6 support regresses with nplan transition
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nplan/+bug/1717404/+subscriptions
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