1*05b00f60SXin Li 1 10:32:56.889022 IP (tos 0x0, ttl 255, id 350, offset 0, flags [none], proto PIM (103), length 128) 2*05b00f60SXin Li 192.168.0.6 > 192.168.1.254: PIMv2, length 108 3*05b00f60SXin Li Register, cksum 0xdeff (correct), Flags [ none ] 4*05b00f60SXin Li IP (tos 0x0, ttl 254, id 15, offset 0, flags [none], proto ICMP (1), length 100) 5*05b00f60SXin Li 192.168.20.10 > 239.1.2.3: ICMP echo request, id 3, seq 0, length 80 6*05b00f60SXin Li 2 10:32:57.054022 IP (tos 0xc0, ttl 255, id 642, offset 0, flags [none], proto PIM (103), length 38) 7*05b00f60SXin Li 192.168.1.254 > 192.168.0.6: PIMv2, length 18 8*05b00f60SXin Li Register Stop, cksum 0x1628 (correct) group=239.1.2.3 source=192.168.20.10 9