[Swan-dev] What should PLUTO_MY_CLIENT_NET contain?

[Andrew Cagney]

I'm looking at this code:

      jam(buf, "PLUTO_MY_CLIENT='");
        jam_subnet(buf, &sr->this.client);
        jam(buf, "' ");

        jam(buf, "PLUTO_MY_CLIENT_NET='");
        ta = subnet_endpoint(&sr->this.client);
        jam_address(buf, &ta);
        jam(buf, "' ");

        jam(buf, "PLUTO_MY_CLIENT_MASK='");
        ta = subnet_mask(&sr->this.client);
        jam_address(buf, &ta);
        jam(buf, "' ");

If you go by the names you'd think that an ip_subnet contained
network-prefix + mask-bits, but based on how it is used, it can contain

     NETWORK_PREFIX+HOST_IDENTIFIER : PORT / MASK-BITS

which means in the above, PLUTO_MY_CLIENT_NET= is set to
NETWORK_PREFIX+HOST_IDENTIFIER.

(in the old code subnet_endpoint() was called networkof() giving the
impression that just the NETWORK_PREFIX was being returned, but it wasn't).
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