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Date:      Tue, 7 Jul 1998 13:09:18 +0000
From:      Samuel S Thomas <sthomas@lart.net>
To:        Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc:        freebsd-bugs@FreeBSD.ORG
Subject:   Re: kern/7191: FreeBSD 2.2.6 generates Source-route prohibited when not routing
Message-ID:  <19980707130918.F13836@lart.net>
In-Reply-To: <2561.899815833@critter.freebsd.dk>; from Poul-Henning Kamp on Tue, Jul 07, 1998 at 02:50:33PM %2B0200
References:  <199807071220.FAA26175@freefall.freebsd.org> <2561.899815833@critter.freebsd.dk>

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> do you by anychance have two ethernet cards with the same MAC address ?
nope, all machines on the network have different ethernet hardware,
excluding the two SparcStations. 

here's the 2 Sun boxen:
le0 at sbus0 slot 0 offset 0xc00000 pri 5: address 08:00:20:0c:87:e3
le0 at sbus0 slot 0 offset 0xc00000 pri 5: address 08:00:20:0c:87:e3

the remaining machines are as following:
Denali: intel hardware with DEC21140 ethernet
rainier: intel hardware with 3Com ethernet
fuji: NeXT hardware with odball ethernet
proteon router with ethernet address l0:0:93:b4:2:be that matches
nothing else on the network


> It happened to me some years ago...
> 
> Could also be a defect card of course.

defect card would not excuse the kernel generating ICMP messages without
verifying destination address. this is clearly a layer 2(TCP/IP 4-layer
model) or layer 3 (7-layer OSI model) problem.

> --
> Poul-Henning Kamp             FreeBSD coreteam member
> phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
> "ttyv0" -- What UNIX calls a $20K state-of-the-art, 3D, hi-res color terminal

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