[108047] in North American Network Operators' Group
Re: duplicate packet
daemon@ATHENA.MIT.EDU (Valdis.Kletnieks@vt.edu)
Mon Sep 22 23:30:36 2008
To: John Jensen <jensenja@gmail.com>
In-Reply-To: Your message of "Mon, 22 Sep 2008 19:54:17 PDT."
<6de481d10809221954p7b45cbdby641f9603a4a40a3f@mail.gmail.com>
From: Valdis.Kletnieks@vt.edu
Date: Mon, 22 Sep 2008 23:30:27 -0400
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
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On Mon, 22 Sep 2008 19:54:17 PDT, John Jensen said:
> She'd have to actually specify -b to ping a broadcast address,
Only true if you're pinging the broadcast address of a network that you
have an interface on, or the system has other knowledge of the netmask/etc.
If you're pinging a remote address, your system (in general) has no way of
knowing if that .0.95 is a broadcast address for a /27, or a normal address
in the middle of a /26 (or one of the other possibilities).
(I've lost the original posting, and can't recall if the OP said if she was
pinging from on-subnet or off-subnet).
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