Well that depends how you have configured the first initial node. Assume you have used default settings it will configure a local bridge “incusbr0” on each incus cluster node which will have it’s own network settings and DNS etc.
Have a look at this How to make a server a member of more than one VxLAN (ie a member of 2 diff VNID) which should explain it a bit more in detail and how to configure Incus using VXLAN.
One option you have is to give each bridge a different ipv4.dhcp.ranges for example:
- node1 range 10.10.4.50 - 10.10.4.99
- node2 range 10.10.4.100 - 10.10.4.149
- node3 range 10.10.4.150 - 10.10.4.199
As long as the ranges between the nodes are not overlapping you have unique IP addresses.
Alternative disable DHCP on each bridge and use a central DHCP server outside of Incus as mentioned above.
Again Incus provides many different solutions but requires to understand how they need to be configured. Flexibility comes with complexity and clustering Incus is a bit of an advanced setup and needs to be thought through. I would recommend using OVN as setup is simple and solves your issue would also eliminate the “incusbr0” bridge….