Traceroute ICMP option doesn't work

Christophe Leroy christophe.leroy at csgroup.eu
Tue Dec 8 18:17:32 UTC 2020


Denys Vlasenko <vda.linux at googlemail.com> a écrit :

> On Tue, Dec 8, 2020 at 5:39 AM M K Verma <manishverma1420 at gmail.com> wrote:
>> Hi Busybox,
>>
>> Package: Busybox
>> Version: 1.29.3
>>
>> We see that traceroute with -6 or traceroute6 never succeeds to  
>> trace some of the sites that filter UDP packets, for example  
>> www.cisco.com, www.nokia.com and so on.
>>
>> We see the issue with IPv6 sites being tracerouted.
>> The traceroute to those sites never completes.
>>
>> We see that on a Linux machine traceroute6 or traceroute with -6,   
>> enforced with -I (ICMP) easily completes the trace but never incase  
>> of the traceroute in the Busybox.
>
> Works for me:

You are IPv4. The problem is in IPv6 afaiu.

>
> ./busybox-1.29.3 traceroute -n -I www.cisco.com
> traceroute to www.cisco.com (104.64.113.19), 30 hops max, 46 byte packets
>  1  192.168.1.1  2.504 ms  0.896 ms  0.895 ms
>  2  100.65.193.2  1.229 ms  1.335 ms  2.860 ms
>  3  83.240.3.158  1.167 ms  1.117 ms  1.177 ms
>  4  83.240.2.46  4.715 ms  5.067 ms  5.114 ms
>  5  83.240.2.45  5.388 ms  11.039 ms  5.642 ms
>  6  *  *  *
>  7  83.240.1.98  10.741 ms  9.736 ms  7.382 ms
>  8  83.240.1.101  68.036 ms  97.793 ms  17.241 ms
>  9  91.210.16.221  7.854 ms  11.494 ms  7.482 ms
> 10  104.64.113.19  7.425 ms  6.181 ms  7.128 ms
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