[949] in SIPB_Linux_Development
Re: probs still with Linux/Kerberos
daemon@ATHENA.MIT.EDU (Bill Sommerfeld)
Wed Mar 1 09:18:11 1995
To: "Charles M. Hannum" <mycroft@ai.mit.edu>
Cc: ghudson@MIT.EDU, tytso@MIT.EDU, linux-dev@MIT.EDU, netbsd-dev@MIT.EDU
In-Reply-To: Your message of "Wed, 1 Mar 1995 05:07:32 -0500 ."
<199503011007.FAA05715@duality.gnu.ai.mit.edu>
Date: Wed, 01 Mar 1995 09:05:44 -0500
From: Bill Sommerfeld <sommerfeld@orchard.medford.ma.us>
Network trivia time:
In recent versions of the BSD TCP stack, if you connect() a UDP socket
(which tells the kernel, "here's the default outgoing address/port,
and you should ignore incoming packets except from this
address/port"), ICMP errors get reflected back up through syscall
error returns.
See sys/netinet/udp_usrreq.c: udp_ctlinput() and udp_notify() for the
UDP-specific part of this stuff..
I suspect Linux may be doing this even when the UDP socket isn't
connected.
- Bill
