said by DocLarge:I don't think I've ever seen that. For some reason, you're gi0/0 interface is finding another device (possibly latent entry from switching between your 871 and 1921??).
Try doing a "clear ip route *" from and see if it drops off...
I can try but it will take at least 5 to 10 mins to switch over. If you want to stay here I will try it now.