New router interfaces down

[AJNOURI]

New router interfaces "DOWN"

Any new router I create has intrefaces "DOWN".
Here is the steps I am doing:

1. Created a new private network "private1"
2. Created a new public
   network "public2" with different subnet pool
   (172.24.4.20,172.24.4.30) than the default one used
   (172.24.4.2,172.24.4.10), I changed the end range to 10 instead of254.
3. Created a new router "router2", connected to private network
   "private1" and set "public2" as default gateway.

The issue is that the new router "router1" have all its interface statuses DOWN.

LA lab

When inspecting the namespaces, I can see both private networks and the default router, but not the new router I created.

ip netns  
qdhcp-76d4b3bc-8b95-4705-8552-811261ceb021 
qrouter-ceb5ca2f-b3fc-4d26-b675-635ddb6d4ca8  
qdhcp-7e17706c-9566-43e1-9d81-1cb9757d6e1c    

By the way I have noticed that it is the same for the router created in Red Hat OpenStack Administrator Certification Prep Course "Configure the Tenants Networks"

Linux Academy Red Hat OpenStack Administrator Certification Prep Course

Same for Openstack on Ubuntu

Deploy and Manage OpenStack on Ubuntu - Icehouse

Any hint about a possible cause?