We're not yet on 24.04 and still have a few OpenStack upgrades to do
before we can try 24.04. For now, we're running 22.04 and do specify the
bridges that neutron-linuxbridge-agent would create directly in systemd-
networkd, which mostly works, like this:
# /etc/systemd/network/10-brqe240c66b-da.netdev
[NetDev]
Name=brqe240c66b-da
Kind=bridge
MTUBytes=1500
# /etc/systemd/network/10-brqe240c66b-da.network
[Match]
Name=brqe240c66b-da
[Link]
MTUBytes=1500
[Network]
LinkLocalAddressing=no
ConfigureWithoutCarrier=yes
This might have some implications on security, since we're not
completely sure that we didn't miss any isolation or brtables/iptables
rule that neutron-linuxbridge-agent would or wouldn't set up, but in our
specific case, we deemed that as acceptable.
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https://bugs.launchpad.net/bugs/2004179
Title:
neutron-linuxbridge-agent flat network incompatibility with systemd-
networkd
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