CVS commit: src/sys/netinet6

["Michael van Elst" <mlelstv%netbsd.org@localhost>]

Module Name:    src
Committed By:   mlelstv
Date:           Sun Nov  4 08:48:01 UTC 2018

Modified Files:
        src/sys/netinet6: udp6_usrreq.c

Log Message:
Fix error path in ip6 source address selection.

in6_selectsrc previously returned a pointer to an ipv6 address,
the pointer was NULL in case of an error and is checked later
instead of the also returned error code. When in6_selectsrc was
changed to store the address into a buffer, the error code
was still ignored, but the buffer pointer was never set to NULL.

As a result send() to an ipv6 address on a system that isn't
configured for ipv6 no longer returns the expected EADDRAVAIL
but fails later in ip6_output with EOPNOTSUPP when trying to
send from an unspecified address. The wrong error code caused
BIND to log the unexpected errors.


To generate a diff of this commit:
cvs rdiff -u -r1.141 -r1.142 src/sys/netinet6/udp6_usrreq.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.