[technique] Débit réseaux IPv6 faible vs IPv4 dans le cas : chez moi connexion fibre Sosh <-> VM piou hébergée
Ludovic Pouzenc
ludovic at pouzenc.fr
Jeu 24 Juil 09:55:48 CEST 2025
Bonjour,
J'espère que tout le monde va bien par ici, il y a longtemps que je
n'interagit plus vraiment, je suis en Savoie depuis pas mal d'années !
Il se pourrait que ça date d'il y a longtemps ( plusieurs mois ?) mais
je m'en rends vraiment compte de manière claire ce jour avec un
borgbackup qui dure trop longtemps :
J'obtiens depuis mon laptop à la maison moins de 7 Mbit/s vers la VM
piou (via le dns AAAA pouzenc.fr) et plus de 250 Mbits pour la même
paire de machines source-destination en IPv4 ( A pouzenc.fr ).
J'ai stoppé le backup le temps d'un iperf à l'arrache (=en wifi à 5
mètres de la box, comme mon backup borg habituellement, dans un seul
sens, sans relire les options fines dans le man) et j'ai essayé de
collecter des infos à l'instant. Je le colle en PJ.
Est-ce que ça met la puce à l'oreille sur une blague de peering ou
transit quelque part ?
Amicalement,
--
Ludovic Pouzenc
www.pouzenc.fr
-------------- section suivante --------------
root at lud-5490:~# iperf3 -c pouzenc.fr
Connecting to host pouzenc.fr, port 5201
[ 5] local 2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc port 60938 connected to 2a03:7220:8081:9f00::1 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 849 KBytes 6.96 Mbits/sec 15 32.1 KBytes
[ 5] 1.00-2.00 sec 628 KBytes 5.14 Mbits/sec 0 44.6 KBytes
[ 5] 2.00-3.00 sec 628 KBytes 5.14 Mbits/sec 0 54.4 KBytes
[ 5] 3.00-4.00 sec 628 KBytes 5.14 Mbits/sec 0 61.4 KBytes
[ 5] 4.00-5.00 sec 690 KBytes 5.66 Mbits/sec 0 68.3 KBytes
[ 5] 5.00-6.00 sec 565 KBytes 4.63 Mbits/sec 0 75.3 KBytes
[ 5] 6.00-7.00 sec 565 KBytes 4.63 Mbits/sec 0 83.7 KBytes
[ 5] 7.00-8.00 sec 753 KBytes 6.17 Mbits/sec 0 127 KBytes
[ 5] 8.00-9.00 sec 1004 KBytes 8.23 Mbits/sec 0 185 KBytes
[ 5] 9.00-10.00 sec 941 KBytes 7.71 Mbits/sec 0 262 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 7.08 MBytes 5.94 Mbits/sec 15 sender
[ 5] 0.00-10.43 sec 6.15 MBytes 4.95 Mbits/sec receiver
iperf Done.
root at lud-5490:~# mtr pouzenc.fr
root at lud-5490:~# iperf3 -4c pouzenc.fr
Connecting to host pouzenc.fr, port 5201
[ 5] local 192.168.1.149 port 38262 connected to 91.224.149.159 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 33.0 MBytes 277 Mbits/sec 0 1.95 MBytes
[ 5] 1.00-2.00 sec 35.0 MBytes 294 Mbits/sec 0 2.18 MBytes
[ 5] 2.00-3.00 sec 36.2 MBytes 304 Mbits/sec 0 2.18 MBytes
[ 5] 3.00-4.00 sec 35.0 MBytes 294 Mbits/sec 0 2.56 MBytes
[ 5] 4.00-5.00 sec 36.2 MBytes 304 Mbits/sec 0 2.87 MBytes
[ 5] 5.00-6.00 sec 36.2 MBytes 304 Mbits/sec 0 3.02 MBytes
[ 5] 6.00-7.00 sec 36.2 MBytes 304 Mbits/sec 0 3.02 MBytes
[ 5] 7.00-8.00 sec 35.0 MBytes 294 Mbits/sec 0 3.02 MBytes
[ 5] 8.00-9.00 sec 35.0 MBytes 294 Mbits/sec 0 3.02 MBytes
[ 5] 9.00-10.00 sec 36.2 MBytes 304 Mbits/sec 0 3.02 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 354 MBytes 297 Mbits/sec 0 sender
[ 5] 0.00-10.04 sec 352 MBytes 294 Mbits/sec receiver
iperf Done.
root at lud-5490:~# iperf3 -c pouzenc.fr
Connecting to host pouzenc.fr, port 5201
[ 5] local 2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc port 43378 connected to 2a03:7220:8081:9f00::1 port 5201
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 855 KBytes 7.00 Mbits/sec 11 43.2 KBytes
[ 5] 1.00-2.00 sec 628 KBytes 5.14 Mbits/sec 0 51.6 KBytes
[ 5] 2.00-3.00 sec 628 KBytes 5.14 Mbits/sec 0 58.6 KBytes
[ 5] 3.00-4.00 sec 628 KBytes 5.14 Mbits/sec 0 66.9 KBytes
[ 5] 4.00-5.00 sec 565 KBytes 4.63 Mbits/sec 0 72.5 KBytes
[ 5] 5.00-6.00 sec 753 KBytes 6.17 Mbits/sec 0 78.1 KBytes
[ 5] 6.00-7.00 sec 565 KBytes 4.63 Mbits/sec 0 83.7 KBytes
[ 5] 7.00-8.00 sec 565 KBytes 4.63 Mbits/sec 0 106 KBytes
[ 5] 8.00-9.00 sec 816 KBytes 6.68 Mbits/sec 0 148 KBytes
[ 5] 9.00-10.00 sec 1.10 MBytes 9.25 Mbits/sec 0 206 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Retr
[ 5] 0.00-10.00 sec 6.96 MBytes 5.84 Mbits/sec 11 sender
[ 5] 0.00-10.34 sec 6.08 MBytes 4.94 Mbits/sec receiver
iperf Done.
root at lud-5490:~# date
jeu. 24 juil. 2025 09:35:43 CEST
root at lud-5490:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
link/ether 10:65:30:eb:e3:11 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 20:16:b9:e7:2e:f3 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.149/24 brd 192.168.1.255 scope global dynamic noprefixroute wlp2s0
valid_lft 84123sec preferred_lft 84123sec
inet6 2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc/64 scope global dynamic noprefixroute
valid_lft 86399sec preferred_lft 599sec
inet6 fe80::7284:a57d:3822:7367/64 scope link noprefixroute
valid_lft forever preferred_lft forever
root at lud-5490:~# ip l
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp0s31f6: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN mode DEFAULT group default qlen 1000
link/ether 10:65:30:eb:e3:11 brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
link/ether 20:16:b9:e7:2e:f3 brd ff:ff:ff:ff:ff:ff
root at lud-5490:~# curl ifconfig.co
2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc
root at lud-5490:~# curl -4 ifconfig.co
2.7.154.171
# Accès internet fibre Sosh (via réseau Orange)
root at lud-5490:~# traceroute6 pouzenc.fr
traceroute to pouzenc.fr (2a03:7220:8081:9f00::1), 30 hops max, 80 byte packets
1 livebox.home (2a01:cb15:85b0:7d00:12e9:92ff:fe6b:8af0) 3.301 ms 3.250 ms 3.220 ms
2 2a01cb08a004020a0193025300750246.ipv6.abo.wanadoo.fr (2a01:cb08:a004:20a:193:253:75:246) 21.594 ms 21.566 ms 22.964 ms
3 2a01:cfc0:200:8000:193:252:102:31 (2a01:cfc0:200:8000:193:252:102:31) 22.937 ms 24.905 ms 24.879 ms
4 * * *
5 * 2a01:cfc4:0:b00::5 (2a01:cfc4:0:b00::5) 29.229 ms *
6 mail.pouzenc.fr (2a03:7220:8081:9f00::1) 40.507 ms 27.289 ms 27.174 ms
root at lud-5490:~# traceroute pouzenc.fr
traceroute to pouzenc.fr (91.224.149.159), 30 hops max, 60 byte packets
1 livebox.home (192.168.1.1) 6.882 ms 6.765 ms 6.696 ms
2 80.10.253.173 (80.10.253.173) 19.940 ms 19.875 ms 19.813 ms
3 ae109-0.ncgre101.rbci.orange.net (193.253.87.206) 19.751 ms 19.686 ms 19.622 ms
4 ae43-0.nilyo101.rbci.orange.net (193.252.101.129) 19.553 ms 21.327 ms 21.264 ms
5 ae40-0.nilyo102.rbci.orange.net (193.252.101.174) 22.847 ms 22.785 ms 22.721 ms
6 * * *
7 193.251.133.84 (193.251.133.84) 17.604 ms * *
8 193.251.254.104 (193.251.254.104) 18.226 ms 19.947 ms 19.887 ms
9 th2.ibr-idf-1.as35625.net (45.15.206.106) 29.896 ms 36.998 ms 31.486 ms
10 45.15.206.111 (45.15.206.111) 31.377 ms 32.762 ms 32.704 ms
11 45.15.206.121 (45.15.206.121) 31.193 ms 31.135 ms 31.001 ms
12 149.11.58.74 (149.11.58.74) 32.383 ms 32.325 ms 27.009 ms
13 mail.pouzenc.fr (91.224.149.159) 28.426 ms 25.046 ms 24.935 ms
root at lud-5490:~#
Via lg.tetaneutral.net
h7: show route for 2.7.154.171/32
View the BGP map
2.7.0.0/16 via 149.11.58.73 on bond0.174 [COGENT_TLS00 2025-07-22 11:25:59] * (370) [AS3215i]
via 149.11.58.121 on bond0.175 [COGENT2_TLS00 2025-07-22 11:25:59] (369) [AS3215i]
via 185.117.18.16 on bond0.2302 [EUROFIBER10G_TLS00 2025-06-02 17:28:58] (348) [AS3215i]
h7: show route for 2.7.154.171/32 all
ERROR: h7: bird command failed with error, Bird connection problem: timed out
h7: show route for 2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc/128
View the BGP map
2a01:cb14::/30 via 2001:978:2:68::8:1 on bond0.174 [COGENT_TLS00_6 2025-07-22 11:25:55] * (360) [AS3215i]
via 2001:978:2:68::9:1 on bond0.175 [COGENT2_TLS00_6 2025-07-22 11:25:55] (359) [AS3215i]
via 2001:7f8:54::10 on bond0.3801 [HE_FRANCEIX_PARIS_6 2025-06-06 00:31:10] (360) [AS3215i]
via 2a01:6600:2e00::8:1 on bond0.2302 [EUROFIBER10G_TLS00_6 2025-06-02 17:29:52] (349) [AS3215i]
h7: show route for 2a01:cb15:85b0:7d00:302a:4010:e8f3:60dc/128 all
Actif : via AS174 COGENT
Alternatif : via AS 6939 HURRICANE,US, via AS35625 EUROFIBER
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