"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?
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.
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/ cfddd4c33c25495 4927942599d299b 3865743146 kernel. ubuntu. com/~kernel- ppa/mainline/ v4.15-rc8/"
[2]: http://
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.