Comment by flarecoder

Some random links about PMTU issues: https://www.znep.com/~marcs/mtu/ https://serverfault.com/questions/1050567/why-does-setting-m... https://serverfault.com/questions/126468/mtu-dsl-router-and-... https://serverfault.com/questions/162062/how-to-check-who-bl...