Fix Bug #2427: Cannot resolve IPv6 only hostnames, by accepting a list
of transport domains.
Updated ENTITY-MIB in rfc 6933
Merge branch 'V5-6-patches' into V5-7-patches

* V5-6-patches:
  Updated ENTITY-MIB in rfc 6933
Fix some man pages references to other pages
Merge branch 'V5-6-patches' into V5-7-patches

* V5-6-patches:
  Fix some man pages references to other pages
Darwin fixes: UDP and TCP tables, memory data, and some error checking.