tree 632d4800c47e86386eab3676ddd808ef2e3e072a
parent 9ef1fbb644bf85fa211588853316efa4848547c6
author Robert Greenwalt <rgreenwalt@google.com> 1377215808 -0700
committer Robert Greenwalt <rgreenwalt@google.com> 1377283706 -0700

Change how DNS resolver handle no default iface

We used to just try any iface we'd been told about as a
fallback, but that will end up mistakenly using a secondary
network's dns when we really don't have a default connection.

It also messed up our detection of whether we were doing the
lookup on the default or not (we'd get back our secondary net
iface as the default, do the compare and think we were on default).

Remove the lies and let dns fail if we don't have an iface for it.

bug:10132565

Conflicts:
	libc/netbsd/resolv/res_cache.c

Change-Id: I357a9c34dad83215f44c5e0dd41ce2a7d6fe8f3f