tree 9be443652c5c0734b6761a84f44980be7958b708
parent 82a6635ca580ccd3c31551c960ec3de816b6c15d
author Timo Teräs <timo.teras@iki.fi> 1452872191 +0200
committer Paul Jakma <paul.jakma@hpe.com> 1456495906 +0000

zebra: support FIB override routes

FIB override routes are for routing protocols that establish
shortcut routes, or establish point-to-point routes that should
not be redistributed. Namely this is useful NHRP daemon to come.

Zebra is extended to select two entries from RIB the "best" entry
from routing protocols, and the FIB entry to install to kernel.
FIB override routes are never selected as best entry, and thus
are never adverticed to other routing daemons. The best FIB
override, or if it does not exist the otherwise best RIB is
selected as FIB entry to be installed.

Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Acked-by: Donald Sharp <sharpd@cumulusnetworks.com>