However, route 126.96.36.199/1 is not seen under the routing table:
> show routing route type ospf
VIRTUAL ROUTER: default (id 1)
destination nexthop metric flags age interface next-AS
10.46.40.0/24 0.0.0.0 10 Oi 523 ethernet1/3
total routes shown: 1
Subnets like 188.8.131.52/1 or 192.0.0.0/2 covers the multicast subnet as well. When installing routes from the unicast routing protocols like OSPF, the Palo Alto Networks device checks for the valid IPv4 unicast route before installing it into the routing table. Palo Alto Networks will reject those subnets as they cover the multicast subnet. If those routes are desired, then the user can add them as a static route.