> On May 17, 2017, at 7:02 AM, Advith Nagappa <advith.naga...@gmail.com> wrote: > > I have created two namespaces ns1 and ns2 and attached them to the ovs-tap > ports (using veth pairs). > > I am able to send TCP and ICMP packets between the two namespaces. > eg: ip netns exec ns1 traceroute -I 10.1.1.1 && ip netns exec ns1 traceroute > -T 10.1.1.1.1 > > but doing the same with UDP fails (doesn't find hops) > ip netns exec ns1 traceroute 10.1.1.1 > > > I have disabled iptables and ufw (firewall). > > Also, if i add a rule for UDP specifically: > ovs-ofctl add-flow br0 > priority=1111,dl_type=0x0800,nw_proto=17,nw_dst=10.1.1.1,tp_dst=9877,actions=NORMAL, > > i see that this rule is hit.(packet count increases in dump-flows), but > forwarding is not done. > > Has anyone gone through a similar issue and come out with new wisdom to > share? Would be be very helpful..
That sounds very strange, and I don't see how OVS could be at fault. You could dump the datapath flows to make sure that they're in fact forwarding the packets. If they are, then it's almost certainly outside of OVS. Have you checked to make sure that there are no firewall rules or other issues in the namespaces? You may want to run tcpdump in various spots to see where the packets are getting dropped. --Justin _______________________________________________ discuss mailing list disc...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
