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    SubjectRe: [2.4 PATCH] bugfix: ARP respond on all devices
    On 19 Aug 2003 14:30:26 -0400
    Daniel Gryniewicz <dang@fprintf.net> wrote:

    > If you are not on a shared lan, then it will *ONLY* work if linux is
    > on the other end. No other system will work.

    And these other systems are broken. (actually, older Cisco equipment
    correctly responds to the ARP regardless of source IP)

    Just because some Cisco engineer says that it is correct doesn't
    make it is.

    Consider the situation logically. When you're replying to an
    ARP, _HOW_ do you know what IP addresses are assigned to _MY_
    outgoing interfaces and _HOW_ do you know what subnets _EXIST_
    on the LAN?

    The answer to both is, you'd don't know these things _EVEN_ if
    you are a router/gateway.

    Therefore there is no valid reason not to respond to an ARP using one
    source address as opposed to another.
    -
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