** Changed in: network-manager (Ubuntu Trusty)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/1609898
Title:
dhclient incorrectly assumes
This bug was fixed in the package network-manager -
1.2.2-0ubuntu0.16.04.3
---
network-manager (1.2.2-0ubuntu0.16.04.3) xenial; urgency=medium
* debian/tests/wpa-dhclient: Don't assume that the IPv6 prefix length from
the DHCP server is /64. (LP: #1609898)
network-manager
After further checking, comcast is sending them, my machine is just not
seeing them... Will file a separate bug.
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Title:
I have confirmed that the machine is accepting router advertisements,
and that comcast is not sending them.
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Title:
With this fix, my IPv6 service from Comcast broke.
Specifically, they hand out an IP on the /64 via dhcpv6, with the
default gateway being an IP on the same /64, along with an IA /56 for
the customer to use locally.
Adding the default route fails because there is no route to said gateway
(since
This bug was fixed in the package isc-dhcp - 4.3.3-5ubuntu14
---
isc-dhcp (4.3.3-5ubuntu14) yakkety; urgency=medium
* Add an initramfs-tools hook and ship everything we need to run dhclient in
the initramfs. This is necessary for proper IPv6 netboot support.
(LP: #1621507)
This bug was fixed in the package network-manager - 1.2.4-0ubuntu1
---
network-manager (1.2.4-0ubuntu1) yakkety; urgency=medium
[ Aron Xu ]
* Imported Upstream version 1.2.4
* Update patches for new upstream release:
-
** Changed in: network-manager (Ubuntu Xenial)
Importance: Undecided => Medium
** Changed in: network-manager (Ubuntu Trusty)
Importance: Undecided => Medium
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http://autopkgtest.ubuntu.com/packages/n/network-manager succeeds again
on xenial, thus verified.
** Tags removed: verification-done-precise verification-done-trusty
verification-done-xenial verification-done-yakkety verification-needed
** Tags added: verification-done
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Hello Dan, or anyone else affected,
Accepted network-manager into xenial-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/network-
manager/1.2.2-0ubuntu0.16.04.3 in a few hours, and then in the -proposed
repository.
Please help us by testing this new
Cherry-picked into xenial branch.
** Changed in: network-manager (Ubuntu Xenial)
Status: Triaged => Fix Committed
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This bug was fixed in the package isc-dhcp - 4.1.ESV-R4-0ubuntu5.11
---
isc-dhcp (4.1.ESV-R4-0ubuntu5.11) precise; urgency=medium
* Don't assume IPv6 prefix length of 64 (LP: #1609898).
Pulled from debian commit c347ab8a43587164486ce1f104eedfd638594e59.
-- Dan Streetman
This bug was fixed in the package isc-dhcp - 4.2.4-7ubuntu12.7
---
isc-dhcp (4.2.4-7ubuntu12.7) trusty; urgency=medium
* Don't assume IPv6 prefix length of 64 (LP: #1609898).
Pulled from debian commit c347ab8a43587164486ce1f104eedfd638594e59.
-- Dan Streetman
This bug was fixed in the package isc-dhcp - 4.3.3-5ubuntu12.3
---
isc-dhcp (4.3.3-5ubuntu12.3) xenial; urgency=medium
[ Mathieu Trudel-Lapierre ]
* debian/isc-dhcp-client.install: install new files for initramfs-tools
to their proper locations; from debian/initramfs-tools.
Also note that dnsmasq can act as both a dhcpv6 server as well as
serving router advertisements.
The ISC dhcp server only does dhcpv6, it does not have support (that I
know of) for serving router advertisements.
If you do want your clients to use slaac addresses in addition to the dhcpv6
For anyone reading this because the isc-dhcp-client update broke their
DHCPv6 network:
First, I assume you're running a DHCPv6 server to provide the ipv6
addresses to your clients. If you do not have any Router Advertisement
service configured on your server, the easiest thing to do is use
Adjusted the network-manager test for yakkety: https://git.launchpad.net
/~network-manager/network-manager/+git/ubuntu/commit/?id=756271bf57
** Changed in: network-manager (Ubuntu Yakkety)
Importance: Undecided => Medium
** Changed in: network-manager (Ubuntu Yakkety)
Status: New =>
** Description changed:
[Impact]
clients who get an ipv6 address from a dhcpv6 server assume the address
has a /64 prefix, but that is not necessarily true, and if the subnet is
different than /64 those clients will not be able to reach other
addresses in that /64 prefix because the
Unfortunately, while I initially put in the bug description that there
was no regresssion potential, I've been made aware that some network
configurations rely on the previous (incorrect) behavior of the dhcp
client to set a prefix len of /64. Such configurations will break when
the dhcp clients
@arges, yep the attached lp1609898-nm-[trusty|xenial|yakkety].debdiff
patches update network-manager's test script to the new behavior. I can
pull the patches out of the debdiffs, if that's easier.
I did a brief search in the network-manager tests and didn't find any
other place that looks like
@ddstreet,
Can you propose a patch for network manager to adjust test cases to this new
behavior? I'm wondering if there are other parts of network-manager that may
expect /64 instead of /128 and break existing users.
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The attached debdiffs lp1609898-nm-[trusty|xenial|yakkety].debdiff patch
network-manager's debian/tests/wpa-dhclient test to use /128 instead of
/64 for its DHCPv6 address test.
Note it leaves the ipv6 Router Advertisement provided addresses with
/64, as that prefix length is provided to the
** Patch added: "lp1609898-nm-yakkety.debdiff"
https://bugs.launchpad.net/ubuntu/precise/+source/network-manager/+bug/1609898/+attachment/4741543/+files/lp1609898-nm-yakkety.debdiff
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** Patch added: "lp1609898-nm-xenial.debdiff"
https://bugs.launchpad.net/ubuntu/precise/+source/network-manager/+bug/1609898/+attachment/4741542/+files/lp1609898-nm-xenial.debdiff
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** Also affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Changed in: network-manager (Ubuntu Precise)
Status: New => Invalid
** Patch added: "debdiff to fix network manager test in trusty"
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