[Bug 1796979]

[Michal-novotny]

Could you please put only "nameserver 217.23.2.11" to /etc/resolv.conf
and provide HTTP log (the same as in comment #13) and dump of DNS
packets when the failure happens? Use tcpdump to dump the DNS packets:

sudo tcpdump -w /tmp/dump.pcap -s 0 udp and port 53 and host 217.23.2.11

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https://bugs.launchpad.net/bugs/1796979

Title:
  Intermittently can't connect to the server

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