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-1220 netvirt <p>Currently, for ingress traffic (i.e., external network), L3_GW_MAC(19)<br/> table only includes a match for dl_dst/mac-address. When an external<br/> network that has both IPv4 and IPv6 subnets is associated to a neutron<br/> router, the router-gw-mac would be the same for both the subnets.<br/> Ideally, L3_GW_MAC table should check the type of subnet and then<br/> update the metadata to either vpnId of ext-ipv4-subnet or ext-ipv6-subnet<br/> before sending the packet to FIB table. </p> NETVIRT-1220

L3_GW_MAC table should match on ip/ipv6 for external network

Bug Medium Resolved Done Sridhar Gaddam Sridhar Gaddam Thu, 19 Apr 2018 06:31:02 +0000 Thu, 21 Jun 2018 13:02:00 +0000 Thu, 21 Jun 2018 13:02:00 +0000 0 2 <p>Hi Sridhar,</p> <p>Request to share the topology used to reproduce the issue. I was trying to reproduce this using below.</p> <p>1) N1 (with IPv4Subnet + IPv6Subnet)<br/> 2) VM booted with N1.<br/> 3) Router R1 created and both IPv4Subnet + IPv6Subnet.<br/> 4) External Network(with ext-IPv4Subnet + ext-IPv6Subnet) of type FLAT.<br/> 5) Router Gw set as below<br/> neutron router-gateway-set --fixed-ip subnet_id=external-subnet,ip_address=192.168.197.195 --fixed-ip subnet_id=ext_IPV6,ip_address=2001:db8:0:7::10 router2 external-net</p> <p>Currently, with this configration I see none of the L3_GW_MAC(19) installed with external-net as match criteria as its failed due to ext-routers DS not populated due to null exception in NeutronvpnNatManager.addExternalFixedIpToExternalIpsList() as there is no IPv4 check(when external-ip is Ipv6).</p> <p>Thanks,<br/> Chetan</p> <p>Hello Chetan,</p> <p>The steps you captured are correct, except that while invoking "neutron router-gateway-set ...", I do not explicitly specify the "--fixed-ips" (which BTW should not make any difference for this use-case).</p> <p>Now coming back to your observation. Yes, we would see the exception with the current netvirt codebase. I'm actually working on IPv6 External Connectivity RFE and addressed lot such exceptions in the code and then noticed this Table19 issue. I'll be pushing a patch in few days, after which you can try to reproduce applying my patch in your setup. </p> <p>Thanks,<br/> --Sridhar.</p> <p>Addressed via: <a href="https://git.opendaylight.org/gerrit/#/c/71093/" class="external-link" target="_blank" rel="nofollow noopener">https://git.opendaylight.org/gerrit/#/c/71093/</a></p> Development Rank 0|i03dl3: