Linux下使用traceroute出现星号解决办法

Linux下使用traceroute出现星号，一般原因是linux的traceroute默认使用tcp或udp，强制使用ICMP就行了。
执行：

sudo traceroute -I t.tt

PS：大写的I和小写的l这两个字符有时候不好区分，放在一起放大比较就会发现大写的I比较矮胖，小写的l比较瘦高！

dk@dk-thinkpad:~$ sudo traceroute -I t.tt （是杠爱伊，不是小写的艾尔）

[sudo] password for dk:

traceroute to t.tt (140.143.179.117), 30 hops max, 60 byte packets

1 softRouter.lan (10.10.10.1) 0.310 ms 0.364 ms 0.487 ms

2 202.114.66.91 (202.114.66.91) 0.929 ms 0.998 ms 0.994 ms

3 202.114.66.254 (202.114.66.254) 1.643 ms 1.692 ms 1.689 ms

4 172.16.11.254 (172.16.11.254) 1.390 ms 1.407 ms 1.742 ms

5 172.16.254.14 (172.16.254.14) 2.983 ms 3.070 ms 3.202 ms

6 172.16.254.34 (172.16.254.34) 1.457 ms 1.051 ms 1.184 ms

7 172.17.11.218 (172.17.11.218) 0.782 ms 0.764 ms 0.813 ms

8 172.17.11.254 (172.17.11.254) 1.978 ms 2.131 ms 2.247 ms

9 218.197.158.254 (218.197.158.254) 1.682 ms 1.845 ms 1.925 ms

10 wh0.cernet.net (202.112.53.81) 3.453 ms 3.577 ms 2.262 ms

11 101.4.114.229 (101.4.114.229) 1.359 ms 1.361 ms 1.408 ms

12 101.4.112.62 (101.4.112.62) 15.075 ms 15.084 ms 15.081 ms

13 101.4.117.26 (101.4.117.26) 11.656 ms 11.676 ms 11.674 ms

14 101.4.112.42 (101.4.112.42) 17.429 ms 17.440 ms 17.437 ms

15 101.4.114.254 (101.4.114.254) 20.094 ms 20.103 ms 20.134 ms

16 101.4.114.42 (101.4.114.42) 37.510 ms 37.561 ms 37.696 ms

17 101.4.135.186 (101.4.135.186) 17.851 ms 17.841 ms 17.934 ms

18 219.224.100.70 (219.224.100.70) 18.289 ms 18.344 ms 18.447 ms

19 10.200.122.33 (10.200.122.33) 40.255 ms 39.341 ms 39.701 ms

20 10.200.7.90 (10.200.7.90) 38.152 ms 38.163 ms 38.362 ms

21 10.200.19.113 (10.200.19.113) 39.102 ms 39.271 ms 39.083 ms

22 140.143.179.117 (140.143.179.117) 38.444 ms 38.774 ms 38.179 ms

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