je pense que le problème vient de ma configuration reseau dans adguard...
si je fais IPA dans la console du docker LXC j'ai ceci :
root@Lxc-docker:~# 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: eth0@if26: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether ca:23:14:9e:e1:ff brd ff:ff:ff:ff:ff:ff link-netnsid 0
inet 192.168.18.XXX/24 brd 192.168.18.255 scope global dynamic eth0
valid_lft 77209sec preferred_lft 77209sec
inet6 fe80::c823:14ff:fe9e:e1ff/64 scope link
valid_lft forever preferred_lft forever
3: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 02:42:64:c3:01:f2 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
inet6 fe80::42:64ff:fec3:1f2/64 scope link
valid_lft forever preferred_lft forever
5: vethc256cbf@if4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default
link/ether de:2d:76:cc:2a:e8 brd ff:ff:ff:ff:ff:ff link-netnsid 1
inet6 fe80::dc2d:76ff:fecc:2ae8/64 scope link
valid_lft forever preferred_lft forever
J'avais fouillé dans le container de adgurad et dans la configuration macvlan je n'ai rien sur l'ipv6