Public bug reported:
After upgrading linux kernel from version 3.13.0-68 to 3.13.0-71 then
Kopete (IM messenger) stopped working, cannot connect to any jabber
server.
I started debugging this problem and found out that, problem resolve
when I boot back 3.13.0-68 kernel version (without touching any system
files or packages). When I boot 3.13.0-71 Kopete always does not
connect.
Next I debugged that problem on 3.13.0-71 is just when /etc/resolv.conf
contains only IPv6 addresses of DNS servers.
Problem is comes down to dns resolver (jabber in Kopete has its own for
SRV records) and syscall recvfrom() (on IPv6 socket) always return error
-EAGAIN without any data returned. But wireshark see that DNS response
was recevied.
So it looks like that after 3.13.0-68 kernel was included some change
which broke receiving UDP packets via IPv6 socket. IPv4 is OK.
** Affects: linux-lts-trusty (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1527902
Title:
3.13.0-71: IPv6 UDP DNS packets are not received
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