C'est bizarre, en comparant les traceroute ce n'est pas le premier saut (nro?) qui pose problème mais le second
>>> 2021-12-06 21:24:27 <<<
$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 box (192.168.1.1) 0.455 ms 0.504 ms 0.673 ms
2 31jul1-nro-1.nro.gaoland.net (109.6.26.15) 2.860 ms 2.814 ms 2.775 ms
3 241.60.6.109.rev.sfr.net (109.6.60.241) 30.422 ms 30.389 ms 30.358 ms
4 186.144.6.194.rev.sfr.net (194.6.144.186) 41.511 ms 41.507 ms 42.056 ms
5 78.146.6.194.rev.sfr.net (194.6.146.78) 40.448 ms * 41.282 ms
6 2.69.26.109.rev.sfr.net (109.26.69.2) 41.251 ms * 39.777 ms
7 27.146.6.194.rev.sfr.net (194.6.146.27) 39.957 ms 39.978 ms 39.836 ms
8 dns.google (8.8.8.8) 39.190 ms 39.724 ms 39.654 ms
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>>> 2021-12-09 13:05:38 <<<
$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 box (192.168.1.1) 0.497 ms 0.555 ms 0.780 ms
2 31jul1-nro-1.nro.gaoland.net (109.6.26.15) 3.019 ms 2.976 ms 2.941 ms
3 241.60.6.109.rev.sfr.net (109.6.60.241) 3.662 ms 3.627 ms 3.708 ms
4 186.144.6.194.rev.sfr.net (194.6.144.186) 15.986 ms 15.813 ms 16.377 ms
5 78.146.6.194.rev.sfr.net (194.6.146.78) 15.960 ms 15.659 ms 15.739 ms
6 2.69.26.109.rev.sfr.net (109.26.69.2) 15.592 ms 13.837 ms 14.261 ms
7 27.146.6.194.rev.sfr.net (194.6.146.27) 14.246 ms 14.298 ms 14.106 ms
8 dns.google (8.8.8.8) 14.066 ms 14.923 ms 14.888 ms
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