Linux - NetworkingThis forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.
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The advantage is that you don't need to be the root user. In your example, the route was incomplete. Using the -I option, you get all of the addresses.
Note: the -i and -I options were exchangedfor compability with LBL traceroute
Use -I for ICMP, and -i <ifname> to specify the interface name
traceroute to www.google.com (184.108.40.206), 30 hops max, 40 byte packets using ICMP
6 te-4-4.car2.Seattle1.Level3.net (220.127.116.11) 68.047 ms 66.934 ms 65.645 ms
7 ae-24-52.car4.Seattle1.Level3.net (18.104.22.168) 64.521 ms 63.325 ms 125.364 ms
8 SPLICE-COMM.car4.Seattle1.Level3.net (22.214.171.124) 148.759 ms 148.715 ms 147.622 ms
9 126.96.36.199 (188.8.131.52) 146.415 ms 145.330 ms 144.241 ms
ICMP tends to be a router or switch setting that may be selected to be dropped when traffic numbers reach a pre-determined point. Say when tcp traffic is 40% limit icmp traffic. ICMP would be a very subjective traffic on any network that you don't fully control.
ICMP echo request/replies are normally blocked on the routers/gateways. So if you use the echo request for traceroute, you wont get a proper reply most of the time. But it will work perfectly if you use UDP/TCP way.