From: Hannes Frederic Sowa <redacted>
Date: Sat, 26 Jul 2014 17:54:40 +0200

On Sa, 2014-07-26 at 19:48 +0400, Andrey Ryabinin wrote:

quoted

2014-07-26 2:15 GMT+04:00 Hannes Frederic Sowa [off-list ref]:

quoted

Otherwise I would just set msg_namelen = 0, too, and just not handle
passed in NULL pointers to sockaddrs.

I like that, how about such chage:

 ...

LGTM! Can you send a patch?

I definitely agree that we should treat NULL as no address specified.