Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!wuarchive!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.protocols.tcp-ip
Subject: Re: why UDP send ICMP port unreachable message?
Message-ID: <6399@auspex.auspex.com>
Date: 2 Mar 91 18:58:31 GMT
References: <9103011243.AA10028@ucbvax.Berkeley.EDU> <1991Mar1.181515.12734@noao.edu>
Organization: Auspex Systems, Santa Clara
Lines: 7

>The routine in_pcbnotify() is interesting because it looks at this
>address and finds *every* socket that is connect()ed to this address
>and sends those sockets the asynchronous error ECONNREFUSED.

The routine "in_pcbnotify()" is buggy.  It is *not* supposed to be doing
that.  It appears to be fixed in 4.3-reno and in SunOS 4.1, and may be
fixed in other systems as well.