zebra: implement per-route mtu handling
This commits allow overriding MTU using netlink attributes on
per-route basis. This is useful for routing protocols that can
advertice prefix specific MTUs between routers (e.g. NHRP).
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
diff --git a/zebra/zebra_vty.c b/zebra/zebra_vty.c
index 6ad286f..b37b901 100644
--- a/zebra/zebra_vty.c
+++ b/zebra/zebra_vty.c
@@ -1290,6 +1290,8 @@
VTY_NEWLINE);
vty_out (vty, " Known via \"%s\"", zebra_route_string (rib->type));
vty_out (vty, ", distance %u, metric %u", rib->distance, rib->metric);
+ if (rib->mtu)
+ vty_out (vty, ", mtu %u", rib->mtu);
vty_out (vty, ", vrf %u", rib->vrf_id);
if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_SELECTED))
vty_out (vty, ", best");