After manually setting the interface MTU to 1411, I found out that the gateway does not accept packets with a payload length of 1416 either.
Also, when pppd receives an ICMP message with message code 4 ("Fragmentation needed"), why doesn't it react by fragmenting and re- sending the offending packet? -- pppd sends packets exceeding MTU https://bugs.launchpad.net/bugs/317567 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs