Right before pressing the ‘Create topic’ button I noticed the cause of the issue, decided to post anyway to share the solution:
I created the interface address 169.254.100.1 with a /32 subnet mask, but this should be /16:
ip addr add 169.254.100.1/16 dev enp138s0f1
The camera obviously cannot connect to this interface because it’s in another subnet (169.254.253.58/16, not /32)