IP: policy routing

modulename: fib_rules.ko

configname: CONFIG_IP_MULTIPLE_TABLES

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>IP: policy routing
In linux kernel since version 2.6.12  
Normally, a router decides what to do with a received packet based
solely on the packet's final destination address. If you say Y here,
the Linux router will also be able to take the packet's source
address into account. Furthermore, the TOS (Type-Of-Service) field
of the packet can be used for routing decisions as well.

If you need more information, see the Linux Advanced
Routing and Traffic Control documentation at
<http://lartc.org/howto/lartc.rpdb.html>

If unsure, say N.

source code: