Hi James, > However when I attempt to ping, I see the ping on the ppp0 interface, > and the source isn't 172.16.0.1: > 2018-07-25 18:26:37.085194521 8.0.0.1 → 192.168.1.1 ICMP 100 Echo > (ping) request id=0x0004, seq=1/256, ttl=64
That indicates you ran into a bug in the 4.15 kernel. See my response at [1] and if you use Ubuntu 18.04, there might soon be a fix [2]. Regards, Tobias [1] https://serverfault.com/a/933614/95913 [2] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1795653
