[5941] in Athena Bugs
Network software bug report
daemon@ATHENA.MIT.EDU (Ken Olum)
Tue Sep 4 15:58:22 1990
Date: Tue, 4 Sep 90 12:58:29 PDT
From: Ken Olum <kdo@lucid.com>
To: bugs@ATHENA.MIT.EDU
Cc: kdo@lucid.com
Is this the right place to report bugs by mail?
Athena software has the following behavior which cisco informs me is a
bug: When you attempt to make a connection from an athena machine to
some other machine "X", and in exchange for your RFC you get ICMP Host
Unreachable, then the athena machine closes all connections to machine
X, rather than merely aborting the new connection that you are trying
to make. This matters because cisco routers send "Host Unreachable"
to mean that the connection you are trying to make is not permitted
for security reasons. We have such a set-up in the connection between
Lucid and the Internet which causes the problem described above.
Here is a message forwarded to me by cisco that relates to this
problem on the Sun.
Ken Olum
kdo@lucid.com
kdo@athena.mit.edu
-------------------------
To: unix-trolls@cisco.com
Subject: [Chuck Hedrick: Re: ICMP unretchables [sic]]
From: Greg Satz <satz@cisco.com>
FYI. For the record and archives. This is what you do to a Sun to neuter
the unreachables drop connections problem.
------- Forwarded Message
Date: Thu, 30 Aug 90 22:49:05 EDT
From: Chuck Hedrick <hedrick@athos.rutgers.edu>
Subject: Re: ICMP unretchables [sic]
inetctlerrmap is an array of u_char, indexed by an internal code
that more or less corresponds to the ICMP error type. Entries are
errno codes. E.g. offset 8 in the array contains ENETUNREACH. You
want to clear entries with offsets 8, 9, and 13, i.e set them to zero.
That will cause them to be ignored. It should affect both tCP
and UDP.
------- End of Forwarded Message
