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    SubjectRe: Linux Router

    On Sep 22 2007 22:10, ben soo wrote:
    >
    > i used to add proxy arp's on the router when i had problems like this. Dunno
    > if it's the recommended fix, but it worked.

    There is certainly no Proxy ARP required here since you do not
    do subnet sharing or funny games like that.

    > http://en.wikipedia.org/wiki/Proxy_arp
    >
    > Carlos Narváez wrote:
    >> +---------------+ . +----------------+
    >> ¦ 192.168.251.1 +---+ 192.168.251.10 ¦ . +----------------+
    >> +---------------+ . ¦ 192.168.254.17 +---+ 192.168.254.16 ¦
    >> . . . . . . . . . . +----------------+ . +----------------+
    >>
    >> - A route has been configured on 192.168.251.1 to point all traffic
    >> for 192.168.254.0/24 to 192.168.251.10.
    >>
    >> - A route has been configured on 192.168.254.16 to point all traffic
    >> for 192.168.251.0/24 to 192.168.254.17.
    >>
    >> - The command "iptables -I FORWARD -j ACCEPT" has been executed.

    Well, and do the counters increase?

    >> Now.. here's what happens. 192.168.251.10 can ping both interfaces on
    >> the router. 192.168.254.16 can also ping both interfaces on the
    >> router. However, 192.168.251.1 cannot ping 192.168.254.16, and
    >> likewise, 192.168.254.16 cannot ping 192.168.251.1.
    >>
    >> What have I forgotten?

    Default GWs (though if you ahve routes, ok..).

    On 251.1, use `ip r g 192.168.254.16` and it should
    show "192.168.254.16 via 192.168.251.10 dev eth0 ...".

    Same on the other side.
    -
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