canonical/microcloud

Network forward feature is not functioning on a random node within the cluster with microovn 22.03/stable

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FrancescoDeSimone commented

If I bootstrap three nodes and establish an uplink connection, then try to configure network forward ip, one of the machines becomes unreachable. This issue does not occur with the latest/edge version of microovn

snap list:

Name        Version                 Rev    Tracking       Publisher   Notes
core20      20240111                2182   latest/stable  canonical✓  base
core22      20240111                1122   latest/stable  canonical✓  base
lxd         5.20-f3dd836            27049  latest/stable  canonical✓  in-cohort
microceph   0+git.4a608fc           793    quincy/stable  canonical✓  in-cohort
microcloud  1.1-04a1c49             734    latest/stable  canonical✓  in-cohort
microovn    22.03.3+snap0e23a0e4f5  395    22.03/stable   canonical✓  in-cohort
snapd       2.61.2                  21184  latest/stable  canonical✓  snapd

lxc network show default:

config:
  bridge.mtu: "1442"
  ipv4.address: 10.99.49.1/24
  ipv4.nat: "true"
  ipv6.address: fd42:42b0:f235:53cb::1/64
  ipv6.nat: "true"
  network: UPLINK
  volatile.network.ipv4.address: 10.205.17.135
description: ""
name: default
type: ovn
used_by:
- /1.0/instances/u1
- /1.0/instances/u2
- /1.0/instances/u3
- /1.0/profiles/default
managed: true
status: Created
locations:
- microcloudp01
- microcloudp03
- microcloudp02

lxc network show UPLINK:

config:
  ipv4.gateway: 10.205.17.129/25
  ipv4.ovn.ranges: 10.205.17.135-10.205.17.199
  ipv4.routes: 10.205.17.200/29
  volatile.last_state.created: "false"
description: ""
name: UPLINK
type: physical
used_by:
- /1.0/networks/default
managed: true
status: Created
locations:
- microcloudp01
- microcloudp03
- microcloudp02

how to reproduce:
add a forward ip to a container:

lxc network forward create default   10.205.17.201  target_address=10.99.49.4

Move the container around the cluster and test its reachability until one node is not reachable:

ping 10.205.17.201
PING 10.205.17.201 (10.205.17.201) 56(84) bytes of data.
64 bytes from 10.205.17.201: icmp_seq=1 ttl=63 time=4.12 ms
64 bytes from 10.205.17.201: icmp_se: 3 time=1.60 ms
--- 10.205.17.201 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
$ lxc stop u1
$ lxc move u1 --target microcloudp02
$ lxc start u1
$ ping 10.205.17.201

PING 10.205.17.201 (10.205.17.201) 56(84) bytes of data.

--- 10.205.17.201 ping statistics ---

4 packets transmitted, 0 received, 100% packet loss, time 3076ms