--- /tmp/man5_resolv.conf.5-orig 2012-09-11 14:25:26.406461617 -0400 +++ /tmp/man5_resolv.conf.5 2012-09-11 14:29:16.972540431 -0400 @@ -168,6 +168,12 @@ (currently 2, see \fI\fP). The value for this option is silently capped to 5. .TP +.BR single-request-reopen " (since glibc 2.11)" +closes the socket and opens a new one before sending a second DNS lookup +if the first one is not handled correctly. This greatly speeds up lookups +in broken DNS environments that would otherwise await timeouts before +rediscovering the need to reset connections in every process. +.TP .B rotate .\" Since glibc 2.2 sets