nanog mailing list archives

Re: address spoofing


From: Phillip Vandry <vandry () Mlink NET>
Date: Fri, 23 Apr 1999 14:08:55 -0400 (EDT)


My outbound access lists block it, so you should never see 1918
sources coming from me.  You should see "* * *" instead, even
if you don't block them coming in to your net.

I think this sucks big-time.  It wouldn't be quite so bad if traceroute
were the only thing that were broken by it (though I do like my
traceroutes to work properly too), but when all ICMP traffic from such a
router is hosed, and one of the links my packets are trying to hop onto
through such a router is down, then I'm a particularly unhappy camper
(if I could see the !H or !N I'd still be unhappy of course, but not

...and I'd certainly like to see my ICMP unreachables which are vital to
path MTU discovery not blocked.

-Phil



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