Hi all, I was wondering if anyone else had problems with gre, or capwap, tunnels over the loopback interface. (We're doing some automated tests which test tunnels.) What I'm seeing is that one packets gets through, and subsequent packets are dropped, somewhere before the gre_rcv is called.
Here's the setup: create 2 bridges: ovs-vsctl add-br a ovs-vsctl add-br b create 2 tunnel ports, one on each bridge: ovs-vsctl add-port a t1 -- set interface t1 type=capwap options:local_ip=127.0.0.1 options:remote_ip=127.0.0.2 options:key=12345 ovs-vsctl add-port b t2 -- set interface t2 type=capwap options:local_ip=127.0.0.2 options:remote_ip=127.0.0.1 options:key=12345 create 2 internal interfaces, one on each bridge ovs-vsctl add-port a p1 -- set interface p1 type=internal ovs-vsctl add-port b p2 -- set interface p2 type=internal ip link set p1 up ip link set p2 up add a route to some network to via p1 ip route add 10.0.0.0/24 dev p1 add an arp entry so that the kernel doesn't arp arp -s 10.0.0.1 00:11:22:33:44:55 send traffic into p1 ping 10.0.0.1 We can see the gre, or capwap udp, packets when doing tcpdump on lo, but gre_rcv, or capwap_rcv, is called just once, and packets don't make it into bridge b, nor are stats updated on the t2 interface. Has anyone had this experience? Cheers, Dan
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