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Date: Fri, 10 Aug 2012 16:03:08 +0200
From: Ruben de Groot <mail25@bzerk.org>
To: Cos <rosettas@gmail.com>
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	Cos <rosettas@gmail.com>, freebsd-questions@freebsd.org
References: <CAKV+xLBfHAmzjQeB+EE_rGA12vWwMvFok+1YS-K2eY2SYeXpEg@mail.gmail.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: How to refresh network card buffer?
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Try 

arp -ad

On Fri, Aug 10, 2012 at 03:38:54PM +0200, Cos typed:
> Hi all
> 
> The background is I have around 100pcs router-like products. they all
> have a fixed IP address 192.168.1.100 and of course different MAC
> address.
> 
> I need to connect them one by one to configure.
> 
> The trouble is while I disconnect one unit and change to another unit,
> the FreeBSD can not recognize the unit immediately. It need around
> more than 10 minutes to ping 192.168.1.200 successfully.
> 
> I can refresh it by "ifconfig ue0 down" and "ifconfig ue0 up", it
> works but I think the way is not smart.
> 
> I guess there is something like buffer to record IP and MAC pair has
> to be cleaned. Could anybody advise?
> 
> -- 
> with kind regards
> _______________________________________________
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