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When requesting a DNS lookup on a hostname that matches to 60 IP addresses, we receive a UDP response with the TRUNCATED flag set.
When this happens, c-ares (by default) switches to using TCP to perform the lookup. Our c-ares integration in the SSSD cannot handle this properly right now.
I am proposing a short-term solution to set the ARES_FLAG_IGNTC flag for ares_init_options(). This tells c-ares to just use the truncated list it received from UDP, rather than switching to TCP.
This bug is meant to track the longer-term solution of properly handling the TCP lookups.
milestone: NEEDS_TRIAGE => SSSD 1.1
Steps to reproduce this are the same as Ticket #384, except that after fixing the segfault, we were instead getting timeouts.
fixedin: => 1.0.3
resolution: => fixed
status: new => closed
tests: 1 => 0
testsupdated: 0 => 1
rhbz: => 0
Metadata Update from @sgallagh:
- Issue assigned to sgallagh
- Issue set to the milestone: SSSD 1.1
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