Bug 1344661

Summary: systemd-networkd tries to do DHCPv6 on bridged interfaces
Product: [Fedora] Fedora Reporter: Tom Hughes <tom>
Component: systemdAssignee: systemd-maint
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 24CC: amessina, johannbg, lnykryn, msekleta, muadda, ssahani, s, systemd-maint, zbyszek
Target Milestone: ---   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: systemd-229-12.fc24 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-08-11 21:54:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Tom Hughes 2016-06-10 09:34:08 UTC 
Description of problem:

After upgrading to F24 my journal was getting spammed with messages like this every second:

Jun 10 10:11:26 host.example.com systemd-networkd[1203]: enp5s0: Starting DHCPv6 client on NDisc request failed: Invalid argument

Interface enp5s0 is joined to a bridge - it's network file looks like this:

[Match]
MACAddress=aa:bb:cc:dd:ee:ff

[Network]
Bridge=br0

It is connected to a network where the IPv6 RAs say that DHCPv6 should be used, so is starting DHCPv6 on the interface, even though it is joined to a bridge but that then fails because of the bridge presumably.

Adding IPv6AcceptRouterAdvertisements=false to make it ignore the RAs on that interface seems to fix things but maybe that should be implied when an interface is joined to a bridge?

Version-Release number of selected component (if applicable):

systemd-229-8.fc24.x86_64
Comment 1 Zbigniew Jędrzejewski-Szmek 2016-06-10 14:03:13 UTC 
It's fixed upstream in https://github.com/systemd/systemd/commit/2b00a4e03d. We probably should backport this. Seems easy enough.
Comment 2 Fedora Update System 2016-08-09 17:03:42 UTC 
systemd-229-11.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-10e709e870
Comment 3 Fedora Update System 2016-08-10 12:25:15 UTC 
systemd-229-11.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-10e709e870
Comment 4 Fedora Update System 2016-08-10 15:21:28 UTC 
systemd-229-12.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-10e709e870
Comment 5 Fedora Update System 2016-08-11 03:25:02 UTC 
systemd-229-12.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-10e709e870
Comment 6 Fedora Update System 2016-08-11 21:53:54 UTC 
systemd-229-12.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.