yes, loopback is [class A](http://www.tcpipguide.com/free/t_IPReservedPrivateandLoopbackAddresses-3.htm) virt. network, so any numbers are ok. 78.28.87 is just because its "status" on ![mobile](http://kids.actewagl.com.au/education/_lib/images/Communications/MobilePhones/Mobile14%20-%20Mobile%20phone%20keypad%20lettering.jpg)