# PING REQUEST
# UK (Angleterre) -> DE (Allemagne) -> FR (France)

mar. mars 12 15:34:05 root@vps-uk:~ # ping6 -c1 fc10:11:6:42:1:0:ff00:1
PING fc10:11:6:42:1:0:ff00:1(fc10:11:6:42:1:0:ff00:1) 56 data bytes
64 bytes from fc10:11:6:42:1:0:ff00:1: icmp_seq=1 ttl=62 time=38.4 ms

--- fc10:11:6:42:1:0:ff00:1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 38.404/38.404/38.404/0.000 ms

# UK (Angleterre) -> DE (Allemagne) -> FR (France)
# PING OK RESPONDING
mar. mars 12 16:32:25 root@bw.ns4:~ $ tcpdump -s0 -t -n ip6 or proto ipv6 and port ! 22 -i eth0
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes

IP6 fec1::1 > fc10:11:6:42:1:0:ff00:1: ICMP6, echo request, id 9054, seq 1, length 64
IP6 fc10:11:6:42:1:0:ff00:1 > fec1::1: ICMP6, echo reply, id 9054, seq 1, length 64

#---------------------------------

# SSH REQUEST
# UK (Angleterre) -> DE (Allemagne) -> FR (France)
mar. mars 12 15:35:55 root@vps-uk:~ # ssh -6 fc10:11:6:42:1:0:ff00:1
ssh: connect to host fc10:11:6:42:1:0:ff00:1 port 22: Connection timed out

# UK (Angleterre) -> DE (Allemagne) -> FR (France)
# SSH KO RESPONDING
mar. mars 12 16:37:12 root@bw.ns4:~ $ tcpdump -s0 -t -n ip6 or proto ipv6 -i eth0
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), snapshot length 262144 bytes
[????]
[Firewall blocking --> OK NOW --> ipv6_strongswan() : https://howto.zw3b.fr/linux/securite/comment-faire-un-reseau-ipv6-firewall-icmpv6]

#---------------------------------

# SSH REQUEST (LOCAL)
# FR (France) -> FR (France)
mar. mars 12 16:40:34 root@bw.ns4:~ $ ssh fc10:11:6:42:1:0:ff00:1
root@fc10:11:6:42:1:0:ff00:1's password:
Linux ns4 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Mar 12 16:37:01 2024 from fc10:11:6:42:1:0:ff00:1
mar. mars 12 16:40:47 root@bw.ns4:~ $

#---------------------------------
# SSH REQUEST
# DE (Allemagne) -> FR (France)
mar. mars 12 16:43:20 root@vps-de:~ # ssh fc10:11:6:42:1:0:ff00:1
root@fc10:11:6:42:1:0:ff00:1's password:
Linux ns4 6.1.0-18-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.76-1 (2024-02-01) x86_64

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Tue Mar 12 16:43:07 2024 from fec0::1
mar. mars 12 16:43:30 root@bw.ns4:~ $

# DE (Allemagne) -> FR (France)
# SSH OK RESPONDING
mar. mars 12 16:43:15 root@bw.ns4:~ $ tcpdump -s0 -t -n ip6 or proto ipv6 -i eth0

IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [S], seq 104599726, win 64240, options [mss 1460,sackOK,TS val 3367933724 ecr 0,nop,wscale 7], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [S.], seq 1159963904, ack 104599727, win 64260, options [mss 1440,sackOK,TS val 2944123836 ecr 3367933724,nop,wscale 7], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 1, win 502, options [nop,nop,TS val 3367933749 ecr 2944123836], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1:41, ack 1, win 502, options [nop,nop,TS val 3367933749 ecr 2944123836], length 40: SSH: SSH-2.0-OpenSSH_8.4p1 Debian-5+deb11u3
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 41, win 502, options [nop,nop,TS val 2944123862 ecr 3367933749], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1:41, ack 41, win 502, options [nop,nop,TS val 2944123889 ecr 3367933749], length 40: SSH: SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u1
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 41, win 502, options [nop,nop,TS val 3367933801 ecr 2944123889], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 41:1121, ack 41, win 502, options [nop,nop,TS val 2944123914 ecr 3367933801], length 1080
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], seq 41:1391, ack 41, win 502, options [nop,nop,TS val 3367933802 ecr 2944123889], length 1350
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1391:1577, ack 41, win 502, options [nop,nop,TS val 3367933802 ecr 2944123889], length 186
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 1577, win 501, options [nop,nop,TS val 2944123915 ecr 3367933802], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1577:1625, ack 1121, win 501, options [nop,nop,TS val 3367933831 ecr 2944123914], length 48
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1121:1717, ack 1625, win 501, options [nop,nop,TS val 2944123953 ecr 3367933831], length 596
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1625:1641, ack 1717, win 501, options [nop,nop,TS val 3367933872 ecr 2944123953], length 16
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 1641, win 501, options [nop,nop,TS val 2944124025 ecr 3367933872], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1641:1685, ack 1717, win 501, options [nop,nop,TS val 3367933937 ecr 2944124025], length 44
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 1685, win 501, options [nop,nop,TS val 2944124050 ecr 3367933937], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1717:1761, ack 1685, win 501, options [nop,nop,TS val 2944124050 ecr 3367933937], length 44
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1685:1745, ack 1761, win 501, options [nop,nop,TS val 3367933962 ecr 2944124050], length 60
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1761:1813, ack 1745, win 501, options [nop,nop,TS val 2944124081 ecr 3367933962], length 52
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 1813, win 501, options [nop,nop,TS val 3367934034 ecr 2944124081], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1745:1829, ack 1813, win 501, options [nop,nop,TS val 3367936994 ecr 2944124081], length 84
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 1829, win 501, options [nop,nop,TS val 2944127149 ecr 3367936994], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1813:1841, ack 1829, win 501, options [nop,nop,TS val 2944127212 ecr 3367936994], length 28
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 1841, win 501, options [nop,nop,TS val 3367937125 ecr 2944127212], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 1841:2469, ack 1829, win 501, options [nop,nop,TS val 2944127238 ecr 3367937125], length 628
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1829:1941, ack 1841, win 501, options [nop,nop,TS val 3367937125 ecr 2944127212], length 112
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 1941, win 501, options [nop,nop,TS val 2944127238 ecr 3367937125], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 2469, win 501, options [nop,nop,TS val 3367937194 ecr 2944127238], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 2469:2513, ack 1941, win 501, options [nop,nop,TS val 2944127306 ecr 3367937194], length 44
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 2513, win 501, options [nop,nop,TS val 3367937219 ecr 2944127306], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [P.], seq 1941:2385, ack 2513, win 501, options [nop,nop,TS val 3367937220 ecr 2944127306], length 444
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [.], ack 2385, win 501, options [nop,nop,TS val 2944127332 ecr 3367937220], length 0
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 2513:2621, ack 2385, win 501, options [nop,nop,TS val 2944127334 ecr 3367937220], length 108
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 2621:3089, ack 2385, win 501, options [nop,nop,TS val 2944127335 ecr 3367937220], length 468
IP6 fc10:11:6:42:1:0:ff00:1.22 > fec0::1.32858: Flags [P.], seq 3089:3221, ack 2385, win 501, options [nop,nop,TS val 2944127347 ecr 3367937220], length 132
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 3089, win 501, options [nop,nop,TS val 3367937247 ecr 2944127334], length 0
IP6 fec0::1.32858 > fc10:11:6:42:1:0:ff00:1.22: Flags [.], ack 3221, win 501, options [nop,nop,TS val 3367937302 ecr 2944127347], length 0