I saw the issue on both Ubuntu 16.04 and 18.04 with kernel versions 4.15.0-33-generic and 4.15.0-34-generic. The problem is not there for the latest released kernel version 4.15.0-36-generic.
I plan to continue testing for several more kernel releases for Ubuntu 16.04 and 18.04 for a while, to see if the issue reappears: https://github.com/jafingerhut/p4-guide/tree/master/linux-veth-bug
I saw the issue on both Ubuntu 16.04 and 18.04 with kernel versions 4.15.0-33-generic and 4.15.0-34-generic. The problem is not there for the latest released kernel version 4.15.0-36-generic.
I plan to continue testing for several more kernel releases for Ubuntu 16.04 and 18.04 for a while, to see if the issue reappears: https:/ /github. com/jafingerhut /p4-guide/ tree/master/ linux-veth- bug