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You can't have two subnets without a router at both ends... you'd need to tell Network A to use Network B's router to get to network B, and Network A's internet connection as the default gateway; any vice versa...
The easiest way i can think of to solve your problem fast and cheap is this. Put both networks on the same subnet - but don't use DHCP on the network, configure your IP addresses manually. to avoid confussion one neibor can use the first 128 addresses, and the other the top 128 addresses.. Next, configure all machiens with the same subnet mask. Next - for all computers on network A, use a default gateway of that house's internet router.; and for network B, a default gateway of that house's internet router.
this would have to be a trusted scenerio, because the only ting stopping you from using your neibors internet connection is changing your default gateway.
the reason why you can't use DHCP is that all computers would be configure with the same default gateway, and go out the DHCP servers internet connectoin.. you can't have more than on DHCP server for the same subnet...
this isn't the *best* way to do this, the best way would to install a router or a comptuer with routing services at each end of the link, to address traffic approriatly to the interent - or to the neibors house... however this process is somewhat complex; and also more expensive.
17hz
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