Hi David, In this case, both paths are in the same layer2 network, there is no symmetric multi-path routing. If original message takes path 1, ICMP response will come from path 1 If original message takes path 2, ICMP response will come from path 2 Also, It works fine outside of LXC.
Thank you, Kfir On Mon, Aug 3, 2020 at 4:32 PM David Ahern <dsah...@gmail.com> wrote: > > On 8/3/20 5:14 AM, mastertheknife wrote: > > What seems to be happening, is that when multipath routing is used > > inside LXC (or any network namespace), the kernel doesn't generate a > > routing exception to force the lower MTU. > > I believe this is a bug inside the kernel. > > > > Known problem. Original message can take path 1 and ICMP message can > path 2. The exception is then created on the wrong path.
