Router_A#debug ip rip
RIP protocol debugging is on
Router_A#
RIP: sending v2 update to 224.0.0.9 via Ethernet0 (172.16.0.1)
172.17.0.0/16 -> 0.0.0.0, metric 1, tag 0
RIP: sending v2 update to 224.0.0.9 via Serial0 (172.17.0.1)
172.16.0.0/16 -> 0.0.0.0, metric 1, tag 0
RIP: ignored v1 packet from 172.17.0.2 (illegal version)
RIP: sending v2 update to 224.0.0.9 via Ethernet0 (172.16.0.1)
172.17.0.0/16 -> 0.0.0.0, metric 1, tag 0
RIP: sending v2 update to 224.0.0.9 via Serial0 (172.17.0.1)
172.16.0.0/16 -> 0.0.0.0, metric 1, tag 0
RIP: ignored v1 packet from 172.17.0.2 (illegal version)
RIP: sending v2 update to 224.0.0.9 via Ethernet0 (172.16.0.1)
172.17.0.0/16 -> 0.0.0.0, metric 1, tag 0