Recently I realized that my changes to /etc/resolve.conf always got overwritten upon system reboot, after searching the web for a while I found the solution from StackExchange: Ubuntu 16.04 IfContinue reading
By default Linux (randomly?) chooses “Client IPv6 Address” (given by HE.net) as source address for outbound connections. This can be inconvenient sometimes tough. To override this, it’s possible to addContinue reading
This results in a rather miserable TLS (HTTPS) handshake failure in my case.. tcpdump shows a suspicious SACK packet when capturing packets through ppp0:
1 2 3 | 00:00:02.112304 IP6 (hlim 63, next-header TCP (6) payload length: 32) 2001:db8::1.12323 > 2001:db8::2.443: Flags [.], cksum 0xabcd (correct), seq 23, ack 1, win 507, options [ nop,nop,sack 1 {5761:5772}], length 0 |
And packets for {1:5760} hadContinue reading
At the first glance I was thinking it’s a bug in my router or it could be some obsolete data that has not been purged:
1 2 3 4 5 6 7 | ppp0 Link encap:Point-to-Point Protocol inet6 addr: 2001:db8:1234:5678::abcd/64 Scope:Global [...] br0 Link encap:Ethernet HWaddr 00:00:00:00:00:00 inet6 addr: 2001:db8:1234:5688::1234:0/64 Scope:Global [...] |
But it isn’t. TheContinue reading