Page "Proxy ARP" Paragraph 7

: Assume a station ( e. g., a server ) with an interface ( 10. 0. 0. 2 ) connected to a network ( 10. 0. 0. 0 / 24 ).

Certain applications may require multiple IP addresses on the server.

Provided the addresses have to be from the 10. 0. 0. 0 / 24 range, the way the problem is solved is through Proxy ARP.

Additional addresses ( say, 10. 0. 0. 230-10. 0. 0. 240 ) are aliased to the loopback interface of the server ( or assigned to special interfaces, the latter typically being the case with VMware / UML / jails / vservers / other virtual server environments ) and ' published ' on the 10. 0. 0. 2 interface ( although many operating systems allow direct allocation of multiple addresses to one interface, thus eliminating the need for such tricks ).