[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
This bug was fixed in the package openvswitch - 1.4.0-1ubuntu1.3 --- openvswitch (1.4.0-1ubuntu1.3) precise-proposed; urgency=low * debian/patches/lp1044318-Reset-upper-layer-protocol-info.patch: Cherry picked upstream patch to avoid critical issues with SNAT/DNAT when OVS is chained with other Linux components. (LP: #1044318) -- Adam GandelmanFri, 07 Sep 2012 15:38:56 -0700 ** Changed in: openvswitch (Ubuntu Precise) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
I have confirmed that the updated packages solve the issue by doing a devstack install on standard precise, seeing the issue, upgrading the ovs packages manually via deb, rebooting the system to load the new kernel module, and then testing that the issue is no longer seen. thanks! ** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** Branch linked: lp:ubuntu/precise-proposed/openvswitch -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
Hello dan, or anyone else affected, Accepted openvswitch into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/openvswitch/1.4.0-1ubuntu1.3 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance! ** Changed in: openvswitch (Ubuntu Precise) Status: Triaged => Fix Committed ** Tags added: verification-needed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** Description changed: - Note: OVS from before 1.5, which includes the default versions shipped - with 12.04 and Fedora 17, has a bug that causes it not to work correctly - with floating IPs when the person contacting the floating IP is on the - same box as quantum-l3-agent. + [Impact] + The connection tracking logic using by IPtables gets confused if a packet passes through multiple linux network namespaces on the same host. The reason for this confusion is that OVS is not properly clearing some of the fields in the skb header, meaning the connection tracking ignores this packet, so iptables functionality that relies on this (in particular DNAT and SNAT) do not work. + + In particular, the use of OVS by OpenStack Quantum is critically + affected by this bug. + + [Fix] + The issue has been fixed upstream as of 1.4.3. A minimal 5-liner that clears the appropriate metadata from the skb header. The patch has been cherry-picked and fix released in the current Ubuntu dev. release (12.10). + + [Test Case] + 1. Create external network 40.0.0.0/24 for floating IPs + 2. Assign br-ex the IP 40.0.0.1 + 3. Pinging 40.0.0.1 appears to work, but you're pinging the router, not the VM + 4. Network connectivity to the VM with the floating IP does not work, as expected. + + [Regression Potential] + Minimal. Simple patch that has been cherry-picked from the current upstream stable release of Openvswitch (1.4.3). + + [Original Report] + Note: OVS from before 1.5, which includes the default versions shipped with 12.04 and Fedora 17, has a bug that causes it not to work correctly with floating IPs when the person contacting the floating IP is on the same box as quantum-l3-agent. While not very likely to happen in a production setup, this is fairly common in simple development environments. For example, let's say you create an external network 40.0.0.0/24 for floating IPs. If you then assign br-ex the IP 40.0.0.1, you should be able to reach all of your VMs with floating IPs, but it won't work because of this bug. Oddly, it - will often appear to work if you use ping, but in reality you are pining - the IP address in the router namespace, not the VM. + will often appear to work if you use ping, but in reality you are + pinging the IP address in the router namespace, not the VM. We believe the following OVS commit it required for this to work properly: http://openvswitch.org/cgi- bin/gitweb.cgi?p=openvswitch;a=commitdiff;h=53e6421bc83918ac2d00ba5516f205fa7e394140 We are looking at creating a new stable release on the 1.4.x branch to include this change and plan to work with distros to get it pulled into their packages. - - [IMPACT] - The connection tracking logic using by IPtables gets confused if a packet passes through multiple linux network namespaces on the same host. The reason for this confusion is that OVS is not properly clearing some of the fields in the skb header, meaning the connection tracking ignores this packet, so iptables functionality that relies on this (in particular DNAT and SNAT) do not work. - - In particular, the use of OVS by OpenStack Quantum is critically - affected by this bug. - - [FIX] - The issue has been fixed upstream as of 1.4.3. A minimal 5-liner that clears the appropriate metadata from the skb header. The patch has been cherry-picked and fix released in the current Ubuntu dev. release (12.10). - - [REGRESSION POTENTIAL] - Minimal. Simple patch that has been cherry-picked from the currentl upstream stable release of Openvswitch (1.4.3). ** Changed in: openvswitch (Ubuntu Precise) Status: Confirmed => Triaged ** Changed in: openvswitch (Ubuntu Precise) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** No longer affects: quantum -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openvswitch/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
Thanks for the quick action on this folks. Let me know when something is available to test (not sure how 'Fix Committed' state corresponds to availability of new packages via apt). -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/quantum/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** Changed in: openvswitch (Ubuntu Precise) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/quantum/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** Also affects: openvswitch (Ubuntu Precise) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/quantum/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1044318] Re: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box
** Branch linked: lp:~gandelman-a/ubuntu/precise/openvswitch/lp1044318 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to openvswitch in Ubuntu. https://bugs.launchpad.net/bugs/1044318 Title: [SRU] pre-1.5 OVS has trouble with floating ips when pinging from the same box To manage notifications about this bug go to: https://bugs.launchpad.net/quantum/+bug/1044318/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
