Re: www.freebsd.org and others (96.47.72.78) unreachable from a specific provider

On 2025-04-04 17:04:51 (+0800), Geoffroy Desvernay wrote:
> Le 04/04/2025 à 06:11, Philip Paeps a écrit :
>> On 2025-04-04 04:49:40 (+0800), geoffroy desvernay wrote:
>>> I'm working in a french university, and we noticed 96.47.72.78 is 
>>> unreachable from here, and from another french univ site using the 
>>> same provider (RENATER).
>>> Others french providers can reach it (tested a mobile one, free.fr, 
>>> ovh.com, evolix.com)
>>> IPv6 access works (is it the same host ?)
>>>
>>> using mtr from RENATER, we see this:
>>>  9. 77.95.71.77                        
>>> 0.0%    16    9.5   9.7   9.3 13.3   1.0
>>> 10. 64.125.29.94                       
>>> 0.0%    16   92.2  92.0  91.9 92.3   0.1
>>> 11. 208.184.34.238                       
>>> 0.0%    16   88.1  89.9  88.0 118.0   7.5
>>> 12. 96.47.77.210                       
>>> 0.0%    16   88.2  88.3  88.2 88.7   0.2
>>> 13. 96.47.66.42                       
>>> 0.0%    16   88.3  88.3  88.0 90.1   0.5
>>> 14. (waiting for reply)
>>>
>>> from another provider, the next (and final) hop responds ok…
>>>
>>> Could it be any filtering ?
>>
>> Feels like a routing glitch at RENATER.  I see 96.47.64.0/20 
>> everywhere I've looked (via RouteViews and RIPE RIS).
>>
> Not sure: I can ping 96.47.72.76 and 96.47.72.79, and routing goes to 
> NY, only last hop is missing, on 96.47.72.77 only …
>
> I opened https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285877

Thanks.  I'll follow up there.

Looks like the routing is okay but you're running to something on our 
web frontends.

Philip