[17872] in North American Network Operators' Group
Re: smurf amp nets, the registry (SAR)
daemon@ATHENA.MIT.EDU (Paul Mansfield)
Tue Jun 16 04:39:33 1998
Date: Tue, 16 Jun 1998 09:28:38 +0100 (BST)
From: Paul Mansfield <paulm@uk.psi.com>
To: Oystein Homelien <oystein@homelien.no>
cc: "D'Arcy J.M. Cain" <darcy@druid.net>, Michael Dillon <michael@memra.com>,
nanog@merit.edu
In-Reply-To: <Pine.LNX.3.96.980615121915.538B-100000@valley.homelien.no>
On Mon, 15 Jun 1998, Oystein Homelien wrote:
> the prefix length is wrong, but in other cases i am at a loss - the hosts
> in the probed network actually seems to return more than one response per
> request. I have no idea why. We saw this with the 193.55.112.0/24
> network, for instance (which has now been fixed).
this could be because
a) there could be a 10.0 internal LAN remapped into a normal IP space?
b) on some versions of unix, when you open /dev/icmp, you will receive ALL
ICMP activity received by the machine, so if your application doesn't look
too closely at the pongs (response to a ping :-), it might see response to
other pings occurring
Paul
----
P Mansfield, Senior SysAdmin PSINet, +44-1223-577577x2611/577611 fax:577600
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