Here's a routing table from host "two", which is using 10.1.1.6. You can see the network address 10.1.1.4, and the default gateway 10.1.1.5 (an alias address on the router):
Code:
Routing tables
Internet:
Destination Gateway Flags Refs Use Mtu Prio Iface
default 10.1.1.5 UGS 0 7 - 8 em0
10.1.1.4/30 link#1 UC 1 0 - 4 em0
10.1.1.5 00:00:00:00:00:03 UHLc 1 0 - 4 em0
10.1.1.6 127.0.0.1 UGS 0 0 33192 8 lo0
127/8 127.0.0.1 UGRS 0 0 33192 8 lo0
127.0.0.1 127.0.0.1 UH 2 24 33192 4 lo0
224/4 127.0.0.1 URS 0 0 33192 8 lo0