Hi, today I´ve updated from 2025-09 to 2025-09b, thereafter in the UI my IPv6 is missing.
didn´t get any error, just:
docker compose up -d
WARN[0000] mount of typevolumeshould not definebindoption
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 0a:f0:f6:e9:80:45 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 fd00:dead:beef:c0::1/80 scope global nodad
valid_lft forever preferred_lft forever
39: br-mailcow: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
link/ether 8e:99:d7:52:02:4b brd ff:ff:ff:ff:ff:ff
inet 172.22.1.1/24 brd 172.22.1.255 scope global br-mailcow
valid_lft forever preferred_lft forever
inet6 fe80::8c99:d7ff:fe52:24b/64 scope link
valid_lft forever preferred_lft forever
br-mailcow has no ULA 🥸
IPv6 in mailcow.conf didn´t changed !
any ideas?
i tried update.sh again:
Checking for remaining containers...
Default IPv6 route found – testing external IPv6 connectivity...
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
Make sure to check if your docker daemon.json does not include "enable_ipv6": true if you do not want IPv6.
IPv6 configuration complete: ENABLE_IPV6=false
what do I have to change in /etc/docker/daemon.json
{"ipv6":true,"fixed-cidr-v6":"fd00:dead:beef:c0::/80","experimental":true,"ip6tables":true}
?
i tried update.sh again:
Checking for remaining containers...
Default IPv6 route found – testing external IPv6 connectivity...
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
Make sure to check if your docker daemon.json does not include "enable_ipv6": true if you do not want IPv6.
IPv6 configuration complete: ENABLE_IPV6=false
what do I have to change in /etc/docker/daemon.json
{"ipv6":true,"fixed-cidr-v6":"fd00:dead:beef:c0::/80","experimental":true,"ip6tables":true}
?
i tried update.sh again:
Checking for remaining containers...
Default IPv6 route found – testing external IPv6 connectivity...
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
Make sure to check if your docker daemon.json does not include "enable_ipv6": true if you do not want IPv6.
IPv6 configuration complete: ENABLE_IPV6=false
what do I have to change in /etc/docker/daemon.json
{"ipv6":true,"fixed-cidr-v6":"fd00:dead:beef:c0::/80","experimental":true,"ip6tables":true}
?
i tried update.sh again:
Checking for remaining containers…
Default IPv6 route found – testing external IPv6 connectivity…
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
Make sure to check if your docker daemon.json does not include “enable_ipv6”: true if you do not want IPv6.
IPv6 configuration complete: ENABLE_IPV6=false
what do I have to change in /etc/docker/daemon.json
{"ipv6":true,"fixed-cidr-v6":"fd00:dead:beef:c0::/80","experimental":true,"ip6tables":true}
?
Checking for remaining containers…
Default IPv6 route found – testing external IPv6 connectivity…
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
Make sure to check if your docker daemon.json does not include “enable_ipv6”: true if you do not want IPv6.
IPv6 configuration complete: ENABLE_IPV6=false
Default IPv6 route found – testing external IPv6 connectivity…
Default IPv6 route present but external IPv6 connectivity failed – disabling IPv6 support.
Skipping Docker IPv6 configuration because host does not support IPv6.
`xxx@mail:~$ curl -6 -v https://google.com
- Host google.com:443 was resolved.
- IPv6: 2a00:1450:4001:80b::200e
- IPv4: (none)
- Trying [2a00:1450:4001:80b::200e]:443…
- Connected to google.com (2a00:1450:4001:80b::200e) port 443`
-> no problem