1 in icmp 1.1.1.1 2.1.1.1 echo 2 in icmp 1.1.1.1 2.1.1.1 echo,1 3 in icmp 1.1.1.1 2.1.1.1 echo,3 4 in icmp 1.1.1.1 2.1.1.1 unreach 5 in icmp 1.1.1.1 2.1.1.1 unreach,1 6 in icmp 1.1.1.1 2.1.1.1 unreach,3 7 in icmp 1.1.1.1 2.1.1.1 echorep 8 in icmp 1.1.1.1 2.1.1.1 echorep,1 9 in icmp 1.1.1.1 2.1.1.1 echorep,3 10 in icmp 2.2.2.2 3.3.3.3 maskreq 11 out icmp 3.3.3.3 2.2.2.2 maskrep 12 in icmp 4.4.4.4 5.5.5.5 timest 13 out icmp 5.5.5.5 4.4.4.4 timestrep 14 in icmp 6.6.6.6 7.7.7.7 inforeq 15 out icmp 7.7.7.7 6.6.6.6 inforep 16