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Bug
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Resolution: Unresolved
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Major
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None
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None
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1
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False
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False
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ovn24.03-24.03.6-48.el9fdp
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rhel-9
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None
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rhel-net-ovn
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ssg_networking
Problem Description: Clearly explain the issue.
ping6 from floating ip to external would fail
Impact Assessment: Describe the severity and impact (e.g., network down,availability of a workaround, etc.).
Software Versions: Specify the exact versions in use (e.g.,openvswitch3.1-3.1.0-147.el8fdp).
ovn26.03-26.03.0-alpha.52.el9fdp.x86_64
Issue Type: Indicate whether this is a new issue or a regression (if a regression, state the last known working version).
regression
Reproducibility: Confirm if the issue can be reproduced consistently. If not, describe how often it occurs.
Always
Reproduction Steps: Provide detailed steps or scripts to replicate the issue.
1 server setup:
systemctl start openvswitch systemctl start ovn-northd ovn-nbctl set-connection ptcp:6641 ovn-sbctl set-connection ptcp:6642 ovs-vsctl set open . external_ids:system-id=hv1 external_ids:ovn-remote=tcp:20.0.86.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=20.0.86.25 systemctl restart ovn-controllerovs-vsctl add-br br-nat ovs-vsctl add-port br-nat ens1f1np1 ip link set ens1f1np1 up ovs-vsctl set open . external_ids:ovn-bridge-mappings=nattest:br-nat ovn-nbctl ls-add ls1 ovn-nbctl lsp-add ls1 ls1p1 ovn-nbctl lsp-set-addresses ls1p1 "00:00:00:01:01:02 192.168.1.1 2001::1" ovn-nbctl lsp-add ls1 ls1p2 ovn-nbctl lsp-set-addresses ls1p2 "00:00:00:01:02:02 192.168.1.2 2001::2" ovn-nbctl lr-add lr1 ovn-nbctl lrp-add lr1 lr1-ls1 00:00:00:00:00:01 192.168.1.254/24 2001::a/64 ovn-nbctl lsp-add ls1 ls1-lr1 ovn-nbctl lsp-set-addresses ls1-lr1 "00:00:00:00:00:01 192.168.1.254 2001::a" ovn-nbctl lsp-set-type ls1-lr1 router ovn-nbctl lsp-set-options ls1-lr1 router-port=lr1-ls1 ovn-nbctl lrp-add lr1 lr1-ls2 00:00:00:00:00:02 192.168.2.254/24 2002::a/64 ovn-nbctl ls-add ls2 ovn-nbctl lsp-add ls2 ls2-lr1 ovn-nbctl lsp-set-addresses ls2-lr1 "00:00:00:00:00:02 192.168.2.254 2002::a" ovn-nbctl lsp-set-type ls2-lr1 router ovn-nbctl lsp-set-options ls2-lr1 router-port=lr1-ls2 ovn-nbctl lsp-add ls2 ls2p1 ovn-nbctl lsp-set-addresses ls2p1 "00:00:00:02:01:02 192.168.2.1 2002::1" ovn-nbctl lsp-add ls1 ls1p3 ovn-nbctl lsp-set-addresses ls1p3 "00:00:00:01:03:02 192.168.1.3 2001::3"ovn-nbctl lrp-add lr1 lr1-pub 0a:0a:56:33:02:ff 172.18.86.254/24 6812:86::254/64 ovn-nbctl ls-add pub \ -- lsp-add pub pub-lr1 \ -- lsp-set-type pub-lr1 router \ -- lsp-set-addresses pub-lr1 router \ -- lsp-set-options pub-lr1 router-port=lr1-pub \ -- lsp-add pub pub-ln \ -- lsp-set-type pub-ln localnet \ -- lsp-set-addresses pub-ln unknown \ -- lsp-set-options pub-ln network_name=nattestovn-nbctl lrp-set-gateway-chassis lr1-pub hv0 #ovn-nbctl lr-nat-add lr1 dnat_and_snat 172.18.86.11 192.168.1.1 ls1p1 00:00:00:ff:02:11 ovn-nbctl lr-nat-add lr1 dnat_and_snat 172.18.86.11 192.168.1.1 ls1p1 0a:0a:56:33:02:11 ovn-nbctl lr-nat-add lr1 dnat_and_snat 6812:86::11 2001::1 ls1p1 0a:0a:56:33:02:11ovs-vsctl add-port br-int ls1p1 -- set interface ls1p1 type=internal external_ids:iface-id=ls1p1 ip netns add ls1p1 ip link set ls1p1 netns ls1p1 ip netns exec ls1p1 ip link set lo up ip netns exec ls1p1 ip link set ls1p1 address 00:00:00:01:01:02 ip netns exec ls1p1 ip link set ls1p1 up ip netns exec ls1p1 ip addr add 192.168.1.1/24 dev ls1p1 ip netns exec ls1p1 ip addr add 2001::1/64 dev ls1p1 ip netns exec ls1p1 ip route add default via 192.168.1.254 ip netns exec ls1p1 ip -6 route add default via 2001::aovs-vsctl add-port br-int ls1p2 -- set interface ls1p2 type=internal external_ids:iface-id=ls1p2 ip netns add ls1p2 ip link set ls1p2 netns ls1p2 ip netns exec ls1p2 ip link set lo up ip netns exec ls1p2 ip link set ls1p2 address 00:00:00:01:02:02 ip netns exec ls1p2 ip link set ls1p2 up ip netns exec ls1p2 ip addr add 192.168.1.2/24 dev ls1p2 ip netns exec ls1p2 ip addr add 2001::2/64 dev ls1p2 ip netns exec ls1p2 ip route add default via 192.168.1.254 ip netns exec ls1p2 ip -6 route add default via 2001::aovs-vsctl add-port br-int ls2p1 -- set interface ls2p1 type=internal external_ids:iface-id=ls2p1 ip netns add ls2p1 ip link set ls2p1 netns ls2p1 ip netns exec ls2p1 ip link set lo up ip netns exec ls2p1 ip link set ls2p1 address 00:00:00:02:01:02 ip netns exec ls2p1 ip link set ls2p1 up ip netns exec ls2p1 ip addr add 192.168.2.1/24 dev ls2p1 ip netns exec ls2p1 ip addr add 2002::1/64 dev ls2p1 ip netns exec ls2p1 ip route add default via 192.168.2.254 ip netns exec ls2p1 ip -6 route add default via 2002::aovs-vsctl add-port br-nat ext1 -- set interface ext1 type=internal ip netns add ext1 ip link set ext1 netns ext1 ip netns exec ext1 ip link set lo up ip netns exec ext1 ip link set ext1 up ip netns exec ext1 ip addr add 172.18.86.101/24 dev ext1 ip netns exec ext1 ip addr add 6812:86::101/64 dev ext1
2 client setup
systemctl start openvswitch
ovs-vsctl set open . external_ids:system-id=hv0 external_ids:ovn-remote=tcp:20.0.86.25:6642 external_ids:ovn-encap-type=geneve external_ids:ovn-encap-ip=20.0.86.26
systemctl restart ovn-controller
ovs-vsctl add-br br-nat
ovs-vsctl add-port br-nat ens1f1np1
ip link set ens1f1np1 up
ovs-vsctl set open . external_ids:ovn-bridge-mappings=nattest:br-nat
ovs-vsctl add-port br-nat ext2 -- set interface ext2 type=internal
ip netns add ext2
ip link set ext2 netns ext2
ip netns exec ext2 ip link set lo up
ip netns exec ext2 ip link set ext2 up
ip netns exec ext2 ip addr add 172.18.86.102/24 dev ext2
ip netns exec ext2 ip addr add 6812:86::102/64 dev ext2
3 ping6 from floating ip to external on server
ip netns exec ls1p1 ping6 6812:86::102 -c 1 ip netns exec ls1p1 ping6 6812:86::101 -c 1
Expected Behavior: Describe what should happen under normal circumstances.
ping6 pass
Observed Behavior: Explain what actually happens.
ping6 failed
Troubleshooting Actions: Outline the steps taken to diagnose or resolve the issue so far.
Logs: If you collected logs please provide them (e.g. sos report, /var/log/openvswitch/* , testpmd console)
[root@wsfd-advnetlab18 nat_test]# rpm -qa | grep -E "openvswitch|ovn"
openvswitch-selinux-extra-policy-1.0-39.el9fdp.noarch
openvswitch3.5-3.5.2-50.el9fdp.x86_64
python3-openvswitch3.5-3.5.2-50.el9fdp.x86_64
ovn26.03-26.03.0-alpha.52.el9fdp.x86_64
ovn26.03-central-26.03.0-alpha.52.el9fdp.x86_64
ovn26.03-host-26.03.0-alpha.52.el9fdp.x86_64
[root@wsfd-advnetlab18 nat_test]# ip netns exec ls1p1 ping6 6812:86::101 -c 1 -w 1 -W 1
PING 6812:86::101(6812:86::101) 56 data bytes--- 6812:86::101 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms[root@wsfd-advnetlab18 nat_test]# ip netns exec ls1p1 ping6 6812:86::102 -c 1 -w 1 -W 1
PING 6812:86::102(6812:86::102) 56 data bytes--- 6812:86::102 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms
<=== ping6 failed
[root@wsfd-advnetlab18 nat_test]# ip netns exec ext1 ping6 6812:86::11 -c 1
PING 6812:86::11(6812:86::11) 56 data bytes
64 bytes from 6812:86::11: icmp_seq=1 ttl=63 time=35.8 ms--- 6812:86::11 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 35.809/35.809/35.809/0.000 ms
<=== ping6 from external would pass
[root@wsfd-advnetlab18 nat_test]# ip netns exec ls1p1 ping6 6812:86::101 -c 1 -w 1 -W 1
PING 6812:86::101(6812:86::101) 56 data bytes
64 bytes from 6812:86::101: icmp_seq=1 ttl=63 time=2.11 ms--- 6812:86::101 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 2.113/2.113/2.113/0.000 ms
<=== after above step, the ping6 from floating ip to external can pass
- clones
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- Dev Complete
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- links to
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RHBA-2025:155230
ovn24.03 bug fix and enhancement update
