每当我运行它时mtr，它都会简要地显示每行一个跳跃，然后在到达最后一个跳跃时，它会在所有其他跳跃上显示为重复条目：
My traceroute [v0.92]
[local hostname] ([local ip]) 2019-10-17T12:40:35-0300
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. [ip1] 0.0% 4 19.7 5.6 0.8 19.7 9.4
[ip]
2. [ip2] 0.0% 4 0.9 0.8 0.7 0.9 0.1
[ip]
3. [ip3] 0.0% 3 7.4 3.7 1.2 7.4 3.3
[ip]
4. [ip] 0.0% 3 0.6 0.7 0.6 0.8 0.1
以下情况不会发生traceroute：
$ traceroute [domain]
traceroute to [domain] ([ip]), 30 hops max, 60 byte packets
1 [ip1] ([ip1]) 1.369 ms 1.322 ms 1.309 ms
2 [ip2] ([ip2]) 1.248 ms 1.218 ms 1.196 ms
3 [ip3] ([ip3]) 38.997 ms 38.988 ms 39.416 ms
4 [ip] ([ip]) 1.034 ms 1.005 ms 0.973 ms
这里发生了什么？