So how the heck does this ip unnumbered work with eigrp?
Let's find out.
Right off the bat I'm seeing that this ip unnumbered command appears to have no effect on multicast traffic.
I'm hitting R2 from R1 all day long with broadcast and multicast pings. These packets are moving across the wire and hitting R2. Even though I don't have any unicast route to R2.
Apparently a unicast packet has to have a route, he needs to know where to go. Whereas a multicast packet will get pushed out of any multicast enabled interface.
Investigating further at this time.....
