** Description changed:
[Impact]
-
- * 0.122ubuntu8.3 of initramfs-tools no longer correctly processed
- ip=dhcp or ip=:::::eth0:dhcp
-
- * Regression-updates
-
- * The fix better parses the ip= command line argument.
+ * initramfs-tools SRUs introduced regressions in ip= syntax, which cause
unexpected behavior
[Test Case]
-
* Create a machine that boots using an nfsroot.
-
* Use ip=:::::eth0:dhcp on the kernel command line. To set up
networking.
-
- * Discover that the device never comes up because, networking is not
- configured correctly.
+ * Discover that the device never comes up because, networking is not
configured correctly.
[Regression Potential]
-
- * Regressions potential is limited to machines using
- ip={""|::::*|on|any|dhcp} on the kernel command line. As this is
- already broken regression potential is minimal. This is common on
- machines that use nfsroot or otherwise pxe boot.
+ Should be back to original behavior before ipv6 support was introduced in the
past 2 or 3 SRUs.
[Other Info]
* There are a number of other issues in this code base that are not solved
by this fix.
- The ?*:?*:?*:?*: use case falls through to the default case, and likely
breaks there. As such static assignment via ip= appears broken
-
* The networking configuration does not strictly follow the kernel
documentation as described
https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt . This
should be fixed.
This bug is a regression of changes made under bug 1628306.
====================Original Bug Description Follows==================
initramfs-tools 0.122ubuntu8.3 introduced a serious regression where
networking is not initialized when the boot option "ip=dhcp" is
provided. We are seeing this problem in AWS, but cannot confirm if this
issue is specific to AWS or will occur with different hardware or in
different environments.
Removing "ip=dhcp" from the boot options with 0.122ubuntu8.3 results in
networking being configured.
The issue does not occur with 0.122ubuntu8.2 or previous versions when
"ip=dhcp" is set.
AWS has no console so debugging is not a trivial task. I do have a
console log with some output, and will update this bug shortly with it.
** Changed in: initramfs-tools (Ubuntu Yakkety)
Status: Fix Released => In Progress
** Changed in: initramfs-tools (Ubuntu Zesty)
Status: Fix Committed => In Progress
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https://bugs.launchpad.net/bugs/1631474
Title:
No networking with initramfs-tools 0.122ubuntu8.3 and ip=dhcp boot
option
Status in initramfs-tools package in Ubuntu:
In Progress
Status in initramfs-tools source package in Xenial:
Fix Released
Status in initramfs-tools source package in Yakkety:
Fix Committed
Status in initramfs-tools source package in Zesty:
In Progress
Bug description:
[Impact]
* initramfs-tools SRUs introduced regressions in ip= syntax, which cause
unexpected behavior
[Test Case]
* Create a machine that boots using an nfsroot.
* Use ip=:::::eth0:dhcp on the kernel command line. To set up
networking.
* Discover that the device never comes up because, networking is not
configured correctly.
[Regression Potential]
Should be back to original behavior before ipv6 support was introduced in the
past 2 or 3 SRUs.
[Other Info]
* There are a number of other issues in this code base that are not solved
by this fix.
- The ?*:?*:?*:?*: use case falls through to the default case, and likely
breaks there. As such static assignment via ip= appears broken
-
* The networking configuration does not strictly follow the kernel
documentation as described
https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt . This
should be fixed.
This bug is a regression of changes made under bug 1628306.
====================Original Bug Description Follows==================
initramfs-tools 0.122ubuntu8.3 introduced a serious regression where
networking is not initialized when the boot option "ip=dhcp" is
provided. We are seeing this problem in AWS, but cannot confirm if
this issue is specific to AWS or will occur with different hardware or
in different environments.
Removing "ip=dhcp" from the boot options with 0.122ubuntu8.3 results
in networking being configured.
The issue does not occur with 0.122ubuntu8.2 or previous versions when
"ip=dhcp" is set.
AWS has no console so debugging is not a trivial task. I do have a
console log with some output, and will update this bug shortly with
it.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1631474/+subscriptions
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