RIP on an Ethernet segment

[config t]

I need a sanity check. Are there any special considerations for running RIP with the scenario below?

The hub router is a router on a stick configuration connected to a trunk port on a layer-2 switch. There are only two VLANs configured on the switch, and several routers are connected to sub-interface 0/0.11 through VLAN 11 access ports that are running RIP just fine. Our test router is connected to sub-interace 0/0.50 through VLAN 50. I have IP reachability between the hub router and my test router.

The wonky part is when I do "show ip rip database" it shows up as a *0.0.0.0/0 via 172.16.50.2 (test router interface)

There are no static routes configured on the test router.

I is confused 

[Otanx]

Do you have auto-summary or default-information-originate on somewhere?

-Otanx

[config t]

default-information-originate

Pesky.. I forgot about that one. It wasn't explicitly configured so I need to check if it is a default on that particular IOS version.