Description of problem:
Authd fails to answer immediately to queries of IPv6 is not active on the local
machine.

Version-Release number of selected component (if applicable): 1.4.3-7.1


How reproducible: always


Steps to Reproduce:
1. deactivate authd from xinetd and strace it: strace in.authd -d
2. type, say, 110:110 (it's an inet daemon so it works with stdin and stdout);
3. look now hard is it trying to read from /proc/net/tcp6!!
  
Actual results:
Because it tries (so hard) to read /proc/net/tcp6 it fails to deliver the answer
quick.

Expected results:
it should answer at once, so that the services using ident do not have to wait
3-4 seconds for an answer.

Additional info: