Comment 0 for bug 1936773

charm-neutron-api allows users setting "default-tenant-network-type" which network type should be used by default as a tenant network.
https://jaas.ai/neutron-api#charm-config-default-tenant-network-type

One of the use cases is setting vlan or flat prior to overlay networks such as gre or vxlan. However, by using charm-neutron-api-plugin-ovn, the list in neutron.conf will have "geneve" at the top of the list and it will be used by default.

[default-tenant-network-type as empty(default) in neutron-api charm config]
tenant_network_types = geneve,gre,vlan,flat,local

[actual value with default-tenant-network-type=vlan]
tenant_network_types = geneve,vlan,gre,flat,local

[expected with default-tenant-network-type=vlan]
tenant_network_types = vlan,geneve,gre,flat,local