Subject: Re: IP Forwarding works only when tcpdump'ing (1.4.2)
To: Frederik Meerwaldt <Meerwaldt@t-online.de>
From: Andrew Brown <atatat@atatdot.net>
List: port-i386
Date: 05/22/2000 15:02:59
>> actually...this can have "undesirable" side-effects. i had a machine
>> once where if the card was in promiscuous mode and it was forwarding,
>> it would also forward local datagrams. the most colourful
>> demonstration of this would be with these three machines:
>>
>[....]
>I know how this acts. It was just a suggestion. I had trouble with my mopd
>some time ago, and turning on the promisc-mode helped, cause it received
>every package (broadcast, too). And he said, that if he turns on tcpdump
>everything works. And tcpdump sets the interface into promisc-mode, thus I
>thought it should work...
i'm not saying it won't work; it almost certainly will. but just be
mindful of certain things that can happen by accident as well.
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