Mirroring some of the thread on the ovs dev ML: >From Christina
"Thanks Eric, that matches my findings, glad that there seems to be an accepted fix already. But it is fairly recent and only in since 4.15-rc8 levels afaik. But OTOH its description at [1] reads pretty much like my notes so far. @James - do you think you could test a super-recent mainline kernel build from [2] in regard to this issue? [1]: https://github.com/torvalds/linux/commit/cfddd4c33c254954927942599d299b3865743146 [2]: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc8/"; This kernel fix resolves a secondary issue I saw with the 4.13 kernel where the workaround we used for 4.4 did not work - the kernel was applying a 1500 max limit to all GRE devices. This was fixed in [1] which I've confirmed on my test but the original OVS bug still exists - gre_sys is still configured with MTU 1472, implying the IFLA_MTU value provided via netlink is being ignored by the kernel. ** Changed in: linux (Ubuntu Artful) Status: Incomplete => Confirmed ** Changed in: linux (Ubuntu Bionic) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1742505 Title: gre_sys set to default 1472 when using path_mtu > 1500 with ovs 2.8.x To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1742505/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
