Hello! I asked this question online already:

   http://superuser.com/q/1138996/247471?sem=2

if you have an answer, please, share it wherever you feel appropriate...

have a fairly vanilla home LAN with an Internet provider-supplied router providing DHCP. The router uses many of its default settings unmodified. The home network is 192.168.1.0/24 and the router itself is known internally as 192.168.1.1.

I need to configure several similar routers to change their default settings. One of my computers (running FreeBSD) has a spare Ethernet interface (|bce0|) and I connected one of these additional routers to it. As expected, this router /also/ uses 192.168.1.1. The machine now has two "configured" interfaces:

 * |bce1| -- 192.168.1.8, which is connected to the "real" router,
   connecting it to the Internet and the rest of the home LAN
 * |bce0| -- 192.168.1.5, which is connected to the second router,
   which I need to change to use different network settings

How can I reach this second router without breaking the machine's connectivity with the LAN and the Internet? Simply trying to reach 192.168.1.1 goes through |bce1| and reaches my normal router...

Can |ipfw(8)| somehow force certain packets to go out using |bce0| instead of |bce1|? Preferably, without the use of "fib", because adding one requires a reboot...

Thanks! Yours,

   -mi


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