Public bug reported: TL:DR seem's like "ping/wget" etc become dislike truncated UDP DNS reply and the become tell "Temporary failure in name resolution" instead fallback to TCP protocol...
https://github.com/DNSCrypt/dnscrypt-proxy/issues/2 I'm using DNSCrypt-proxy running at 127.0.2.1:53 me@nb:~$ cat /etc/resolv.conf nameserver 127.0.2.1 me@nb:~$ nslookup ya.ru Server: 127.0.2.1 Address: 127.0.2.1#53 Non-authoritative answer: Name: ya.ru Address: 87.250.250.242 me@nb:~$ ping ya.ru PING ya.ru (87.250.250.242) 56(84) bytes of data. 64 bytes from ya.ru (87.250.250.242): icmp_seq=1 ttl=50 time=31.3 ms ^C --- ya.ru ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 31.320/31.320/31.320/0.000 ms now I'm setting TCPOnly on into /etc/dnscrypt-proxy/dnscrypt-proxy.conf me@nb:~$ sudo service dnscrypt-proxy restart me@nb:~$ nslookup ya.ru ;; Truncated, retrying in TCP mode. Server: 127.0.2.1 Address: 127.0.2.1#53 Non-authoritative answer: Name: ya.ru Address: 87.250.250.242 me@nb:~$ ping ya.ru ping: ya.ru: Temporary failure in name resolution Is it possible to serve DNS over UDP but communicate between DNSCrypt proxy and DNSCrypt server over TCP? ** Affects: resolvconf (Ubuntu) Importance: Undecided Status: New ** Tags: dns -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1745540 Title: Ubuntu 17.10 - DNS query via TCP not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/resolvconf/+bug/1745540/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
