Re: ARP behavior in FreeBSD vs Linux

From: Olivier Nicole (on_at_cs.ait.ac.th)
Date: 09/19/05

  • Next message: Peter van Dijk: "Re: ARP behavior in FreeBSD vs Linux" 
    Date: Mon, 19 Sep 2005 13:06:19 +0700 (ICT)
To: freebsd-net@freebsd.org

    > What Motonori Shindo described is actually the default behaviour for
    > Linux kernels (at least my 2.6.8-kernel does it by default). It could be
    > seen as a sort of proxy-arp, but only for the host itself, not other
    > systems. Let me try to describe when it happens. Say you have
    > 192.168.42.42 bound on eth0 and have eth1 connected to some ethernet
    > LAN. When a host on that eth1-connected LAN sends an 'arp who-has
    > 192.168.42.42', a Linux system will answer that arp-request with it's
    > eth1 MAC-address, although the IP-address is bound on eth0 and the arp
    > request comes in on eth0. FreeBSD obviously doesn't do this.

    To me, it seems that FreeBSD does just that too once bridge is enabled.

    Olivier
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