Why the network is unreable?

Rob Sterenborg rob at sterenborg.info
Sun Nov 5 19:05:25 CET 2006

> Hi:
>     My network is like this:
>     A(IP:          B(IP:
>      C(IP: (netmask:    
> (gw:            gw :

I'm not sure what you mean because of wrapping.
You mean this?


B(IP:   (IP:
 (NM: (NM:


You should change the GW of C into
C does not know the route to; B does.

>    B is a machine with 2 network cards .
>    At first I enable the /proc/sys/net/ipv4/ip_forward and
> set the default gw
>     Now, A ping B is ok and B ping C is ok. But when A ping C the
> network is unreachable.
>    I don't know why. Please help me.


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