SLIP/PPP Subnet

SLIP/PPP Subnet

If you have a lot of standalone clients, it would be cumbersome to issue arp commands for all of them. A better strategy is to allocate client addresses from a special subnet set aside for SLIP and PPP clients. The server acts as a gateway to this net. The server must run routed, and it should use the -F option to reduce unnecessary network traffic. For example, if the SLIP/PPP subnet was 192.26.80, the string "-F 192.26.80" should be added to the /etc/config/routed.options file.

The clients should set up default routes through the server, just as with proxy-ARP routing. In addition, if clients are to communicate with one another, they must have their Ethernet interfaces turned off:

% chkconfig network off

If clients have their Ethernet interfaces enabled, they will try to reach other clients on the same "net" through Ethernet, rather than through the server.