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Date: Thu, 24 Apr 2008 11:50:43 -0500
From: Reid Linnemann <lreid@cs.okstate.edu>
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Cc: freebsd-questions@freebsd.org
Subject: Re: Change gateway
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Written by Aguiar Magalhaes on 04/24/08 11:42>>
> Hi list,
> 
> I'm trying to set the gateway 10.0.253.1 to the host 10.0.253.161/27 but i've  received the answer: 
> 
> # route flush
> # route add default 10.0.253.1
> 
> route: writing to routing socket: Network is unreachable
> 
> The gateway and the host are connected in the same switch
> 
> How can I do it ?
> 
> Aguiar

your mask on 10.0.253.161 specifies the interfaces network spans
addresses 10.0.253.160 - 10.0.253.167. 10.0.253.1 is not in that range.