https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/NETVIRT-292 netvirt <p>Followed the below steps on openstack controller to configure IPV6 </p> <p>1.Created the network <br/> 2.Created the subnet for ipv6 : 2001:db8:1234::/64 with slaac mode<br/> 3.Associated subnet to router <br/> 4.Launch the VM in dashboard <br/> 5.ping6 between same VMs and its failing </p> <p>=======================================================</p> <p> cookie=0x6900000, duration=1350.413s, table=40, n_packets=0, n_bytes=0, priority=61010,ipv6,dl_src=fa:16:3e:59:12:09,ipv6_src=2001:db8:1234:0:f816:3eff:fe59:1209 actions=ct(table=41,zone=6001)<br/> cookie=0x6900000, duration=2315.477s, table=41, n_packets=0, n_bytes=0, priority=62020,ct_state=-new+est-rel-inv+trk actions=resubmit(,17)<br/> cookie=0x6900000, duration=2315.475s, table=41, n_packets=0, n_bytes=0, priority=62020,ct_state=-new-est+rel-inv+trk actions=resubmit(,17)</p> <p>cookie=0x6900000, duration=2315.476s, table=41, n_packets=390, n_bytes=33540, priority=62020,ct_state=+inv+trk actions=drop</p> <p> cookie=0x6900000, duration=1367.535s, table=41, n_packets=0, n_bytes=0, priority=12802,ct_state=+new+trk,ip,metadata=0x33350000000000/0x1fffff0000000000 actions=ct(commit,zone=6001),resubmit(,17)<br/> cookie=0x6900000, duration=1367.142s, table=41, n_packets=0, n_bytes=0, priority=12802,ct_state=+new+trk,ipv6,metadata=0x33350000000000/0x1fffff0000000000 actions=ct(commit,zone=6001),resubmit(,17)<br/> cookie=0x6900000, duration=1349.804s, table=41, n_packets=0, n_bytes=0, priority=12802,ct_state=+new+trk,ip,metadata=0x33360000000000/0x1fffff0000000000 actions=ct(commit,zone=6001),resubmit(,17)<br/> cookie=0x6900000, duration=1349.345s, table=41, n_packets=0, n_bytes=0, priority=12802,ct_state=+new+trk,ipv6,metadata=0x33360000000000/0x1fffff0000000000 actions=ct(commit,zone=6001),resubmit(,17)<br/> cookie=0x6900000, duration=2315.476s, table=41, n_packets=0, n_bytes=0, priority=50,ct_state=+new+trk actions=drop<br/> cookie=0x6900000, duration=2315.474s, table=41, n_packets=0, n_bytes=0, priority=0 actions=drop</p> <p>Operating System: All<br/> Platform: All</p> NETVIRT-292

ping6 is failing between VMS with OVS2.6 + DPDK

Bug Resolved Done Sridhar Gaddam mahesh loni Thu, 24 Nov 2016 10:02:35 +0000 Sun, 8 Jan 2017 13:44:25 +0000 Sun, 8 Jan 2017 13:44:25 +0000 Boron General 0 2 <p>According to OVS FAQ <span class="error">&#91;1&#93;</span>, "Connection tracking" in "Userspace" is marked as "PARTIAL". It is not clear what is supported and what is not supported from the FAQ. </p> <p>So, it is possible that this issue could be a bug in OVS dpdk.</p> <p><span class="error">&#91;1&#93;</span> <a href="https://github.com/openvswitch/ovs/blob/master/FAQ.rst" class="external-link" target="_blank" rel="nofollow noopener">https://github.com/openvswitch/ovs/blob/master/FAQ.rst</a></p> <p>Does anyone have info about "IPv6 conntrack support in OVS-dpdk"?</p> <p>If indeed missing IPv6 conntrack support in OVS-DPDK 2.6 (very much possible as conntracking in userspace was only introduced in 2.6), we should probably recommend DPDK users interested in IPv6 support to use "learn" security groups instead of the default "stateful" mode.</p> <p>Please find the latest analysis :<br/> ===================================================================</p> <p>The datapath flows look like the following on DPDK datapath:</p> <p>sudo ovs-appctl dpif/dump-flows br-int<br/> ct_state(-new-est-rel+inv+trk),recirc_id(0x1),in_port(5),eth_type(0x86dd),ipv6(frag=no), packets:408, bytes:35088, used:0.804s, actions:drop<br/> recirc_id(0),in_port(5),eth(src=fa:16:3e:6e:9f:b0,dst=33:33:ff:d0:37:61),eth_type(0x86dd),ipv6(src=2001:db8:1234:0:f816:3eff:fe6e:9fb0,proto=58,frag=no),icmpv6(type=135), packets:408, bytes:35088, used:0.804s, actions:ct(zone=5002),recirc(0x1)</p> <p>So the first NDP packet coming on the node with DPDK datapath is dropped, because it has flags (-new-est-rel+inv+trk) and OVS drops it on flow:<br/> cookie=0x6900000, duration=616.377s, table=41, n_packets=246, n_bytes=21156, priority=62020,ct_state=+inv+trk actions=drop</p> <p>This is an issue with OVS and its dropping the icmp type=135 in case of userspace mode.</p> <p>Please find the latest analysis :<br/> ===================================================================</p> <p>The datapath flows look like the following on DPDK datapath:</p> <p>sudo ovs-appctl dpif/dump-flows br-int<br/> ct_state(-new-est-rel+inv+trk),recirc_id(0x1),in_port(5),eth_type(0x86dd),ipv6(frag=no), packets:408, bytes:35088, used:0.804s, actions:drop<br/> recirc_id(0),in_port(5),eth(src=fa:16:3e:6e:9f:b0,dst=33:33:ff:d0:37:61),eth_type(0x86dd),ipv6(src=2001:db8:1234:0:f816:3eff:fe6e:9fb0,proto=58,frag=no),icmpv6(type=135), packets:408, bytes:35088, used:0.804s, actions:ct(zone=5002),recirc(0x1)</p> <p>So the first NDP packet coming on the node with DPDK datapath is dropped, because it has flags (-new-est-rel+inv+trk) and OVS drops it on flow:<br/> cookie=0x6900000, duration=616.377s, table=41, n_packets=246, n_bytes=21156, priority=62020,ct_state=+inv+trk actions=drop</p> <p>This is an issue with OVS and its dropping the icmp type=135 in case of userspace mode.</p> <p>Patch in Master branch (Merged): <a href="https://git.opendaylight.org/gerrit/#/c/49775/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/49775/</a><br/> Stable/Boron : <a href="https://git.opendaylight.org/gerrit/#/c/50082/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/50082/</a></p> Development External issue ID 7229 External issue URL Rank 0|i01qwf: