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Date:      Wed, 23 Feb 2000 17:11:41 -0300
From:      Joao Carlos Mendes Luis <jonny@jonny.eng.br>
To:        Masahiro Ariga <mariga@cd.mbn.or.jp>
Cc:        freebsd-net@FreeBSD.ORG
Subject:   Re: arp wrongs in Multicast
Message-ID:  <38B43EFD.9384FF1C@jonny.eng.br>
References:  <001101bf740f$4b529ce0$064ca8c0@gateway>

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Masahiro Ariga wrote:
> 09:49:45.001329 0:a0:c9:93:ba:2f Broadcast arp 42: arp who-has 234.5.6.7
> tell 192.168.76.69
> 
> 192.168.76.69 is a Server's own output interface IP.
> It looks like there's  no reply for multicast address 234.5.6.7.
> 
> My questions are:
> 1.Does arp correctly work during multicast transmission ?

  There should be NO arp for multicast addresses.

  The MAC addresses for multicast IPs are created from a static
"conversion table".

  You should probably go search why these arp requests are beeing
generated.

> 2.If it works,why one of interfaces' address becomes "incomplete" after 20
> minutes.

  Check if mrouted is still running.

					Jonny

-- 
João Carlos Mendes Luís			jonny@jonny.eng.br
  Networking Engineer			jcml@ieee.org



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