libc/resolv: Switch default to loopback addressHEADmain

If no resolver configuration was found, we would fall back to INADDR_ANY
and IN6ADDR_ANY.  This made sense when it was first written thirty or
forty years ago but not today, especially since connecting to INADDR_ANY
or IN6ADDR_ANY is no longer supported.  Switch to the loopback address
and simplify the code.

Note that (as the pre-existing comment in the code states) running
without a resolver configuration is not really supported.  Still, if
we're going to have a hardcoded fallback, it might as well work.

PR:		291790
MFC after:	1 week
Reviewed by:	kevans
Differential Revision:	https://reviews.freebsd.org/D55011

0 files changed, 0 insertions, 0 deletions