router A 10.254.254.1 and 10.254.254.129 
 10.254.254.0/25
 10.254.254.128/25

router B 10.254.254.31
 10.254.254.0/25


peer C 192.168.0.1 and 10.254.254.200
 10.245.254.128/25
 192.168.0.0/24


  Internet

    |   |
C - A - B


B will use it's default route instead of it's route to 10.254.254.1