С помощью команд мониторинга сети передайте три ICMP‑пакета по туннелю
[root@client ~]# ping -c3 -I 172.16.0.1 172.16.0.2
PING 172.16.0.2 (172.16.0.2) from 172.16.0.1 : 56(84) bytes of data.
64 bytes from 172.16.0.2: icmp_seq=1 ttl=64 time=0.747 ms
64 bytes from 172.16.0.2: icmp_seq=2 ttl=64 time=1.06 ms
64 bytes from 172.16.0.2: icmp_seq=3 ttl=64 time=0.796 ms
--- 172.16.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2045ms
rtt min/avg/max/mdev = 0.747/0.869/1.064/0.139 ms
[root@client ~]#
[root@network ~]# tcpdump -c6 -i eth1
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), snapshot length 262144 bytes
23:01:53.464000 IP 10.0.11.11 > 10.0.33.33: IP 172.16.0.1 > 172.16.0.2: ICMP echo request, id 4, seq 1, length 64
23:01:53.464411 IP 10.0.33.33 > 10.0.11.11: IP 172.16.0.2 > 172.16.0.1: ICMP echo reply, id 4, seq 1, length 64
23:01:54.465498 IP 10.0.11.11 > 10.0.33.33: IP 172.16.0.1 > 172.16.0.2: ICMP echo request, id 4, seq 2, length 64
23:01:54.465932 IP 10.0.33.33 > 10.0.11.11: IP 172.16.0.2 > 172.16.0.1: ICMP echo reply, id 4, seq 2, length 64
23:01:55.521020 IP 10.0.11.11 > 10.0.33.33: IP 172.16.0.1 > 172.16.0.2: ICMP echo request, id 4, seq 3, length 64
23:01:55.521376 IP 10.0.33.33 > 10.0.11.11: IP 172.16.0.2 > 172.16.0.1: ICMP echo reply, id 4, seq 3, length 64
6 packets captured
6 packets received by filter
0 packets dropped by kernel
[root@network ~]#
