I am using router1 to advertise 72.237.4.0 to two diffrent routers. I have the 67.*.*.* and the 4.*.*.*.
The 67 neighbor R3 can ping 72.237.4.1 but R4 cannot.. I see R4 as having a valid route "*" but not "*>". Here is some screenshots and the configs from R1,R3,R4.
Here is the GNS3...