Losing Global IPv6 on OPI5+ using Docker Peertube

Troubleshooting
1

Creating a bug report/issue

I have searched the existing open and closed issues

Required Information

  • DietPi version | cat /boot/dietpi/.version
    G_DIETPI_VERSION_CORE=9
    G_DIETPI_VERSION_SUB=12
    G_DIETPI_VERSION_RC=1
    G_GITBRANCH=‘master’
    G_GITOWNER=‘MichaIng’

  • Distro version | echo $G_DISTRO_NAME $G_RASPBIAN
    bookworm

  • Kernel version | uname --all
    Linux OPI 6.1.115-vendor-rk35xx #1 SMP Thu May 1 16:13:28 UTC 2025 aarch64 GNU/Linux

  • Architecture | dpkg --print-architecture
    arm64

  • SBC model | echo $G_HW_MODEL_NAME or (EG: RPi3)
    Orange Pi 5 Plus (aarch64)

  • Power supply used | (EG: 5V 1A RAVpower)
    5v 4a

  • SD card used | (EG: SanDisk ultra)
    boot on SD, data on M.2

Additional Information (if applicable)

  • Software title | (EG: Nextcloud)
    Peertube on docker with IPV6

  • Was the software title installed freshly or updated/migrated?
    Nope. I have the problem since I changed my internet provider. Its router now comes with ipv6 public ip instead of ipv4 public ip. So I had to reconfigure my hosted services to use the public IPv6.

  • Can this issue be replicated on a fresh installation of DietPi?
    Yes, in fact I have two locations, a RP4 and OPI5+, and both with the same behavior.

  • Bug report ID | echo $G_HW_UUID
    ?

Steps to reproduce

  1. Having a global IPv6 on the SBC
  2. Having a reverse proxy listening on ipv6
  3. Starting Peertube Docker Container

Expected behaviour

  • Enjoying Peertube

Actual behaviour

  • All my services become unavailable
  • This comes down to IPv6 configuration of SBC, which loses “global IPv6”.

Extra details

From my little experience, I believe the SLAAC lease duration is perticularly short. But I have no idea how to definitively increase this. And I’m not sure it’s the only problem.
Here is my conf before starting peertube :

3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether c0:74:2b:ff:6a:2e brd ff:ff:ff:ff:ff:ff
inet 192.168.1.3/24 brd 192.168.1.255 scope global dynamic eth0
valid_lft 71663sec preferred_lft 71663sec
inet6 2a02:8429:8331:7e01:c274:2bff:feff:6a2e/64 scope global
valid_lft 493sec preferred_lft 493sec
inet6 fe80::c274:2bff:feff:6a2e/64 scope link
valid_lft forever preferred_lft forever

Once Peertube is loaded, the “global” disappears.