I want to send a multicast packet to multiple gre tunnel, but the packet
only went to where the routing table configured to.
ex.
when use
ip route add 224.0.0.0/4 via gre0
then the packet go to gre0
when use
ip route add 224.0.0.0/4 via gre1
then the packet go to gre1
when use
ip route add 224.0.0.0/4 nexthop via gre1 nexthop via gre0
then the packet go to either gre or gre1 randomly, but not both ( is it
for load balance ? )
how to configure the routing table let the packet go to both of gre
tunnels ?
