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[GH-ISSUE #25] Olm client - IPv6 addresses must be surrounded by square brackets #1388

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opened 2026-06-05 04:13:58 -05:00 by GiteaMirror · 0 comments
GiteaMirror commented 2026-06-05 04:13:58 -05:00
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Originally created by @kevin-gillet on GitHub (Sep 3, 2025).
Original GitHub issue: https://github.com/fosrl/olm/issues/25

On Debian 13 amd64 server, I try to connect Olm client to my Pangolin (Gerbil) instance only via ipv6.

The goal is to establish a site to site connection to my Newt instances.

root@debian-amd64:/usr/local/bin# systemctl status olm --no-pager -l
● olm.service - Olm
     Loaded: loaded (/etc/systemd/system/olm.service; disabled; preset: enabled)
     Active: active (running) since Thu 2025-09-04 01:06:29 CEST; 12min ago
 Invocation: ce950cb0c60b4ebdb010192d004f8228
   Main PID: 1070661 (olm)
      Tasks: 19 (limit: 76567)
     Memory: 12.2M (peak: 13M)
        CPU: 241ms
     CGroup: /system.slice/olm.service
             └─1070661 /usr/local/bin/olm --id <redacted> --secret <redacted> --endpoint <redacted> --holepunch

Sep 04 01:06:30 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:30 UDP hole punch goroutine ended for all exit nodes
Sep 04 01:06:30 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:30 UDP hole punch goroutine ended
Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 UAPI listener started
Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Started monitoring for site 2 at 100.90.128.1:64639
Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Configured peer Q9hjJ19LYyA/wewcekHXdH7q7MpMb/pMt+YRfDh2wVc=
Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Started monitoring peer 2
Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 WireGuard device created.
Sep 04 01:06:34 debian-amd64 olm[1070661]: WARN: 2025/09/04 01:06:34 Peer 2 is disconnected
Sep 04 01:06:34 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:34 Sent relay message
Sep 04 01:06:34 debian-amd64 olm[1070661]: ERROR: 2025/09/04 01:06:34 Failed to configure WireGuard device: IPC error -22: failed to set endpoint 2a01:cb05:810e:bb00:9876:5432:1098:7654:21820: invalid ip:port "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:21820", IPv6 addresses must be surrounded by square brackets

I redacted my ipv6 but the DNS entry was correct.

I did encounter this issue before too with the previous Olm version, but with the current Olm version 1.1.1 the issue is no more related to colons but brackets now as you can see.

Originally created by @kevin-gillet on GitHub (Sep 3, 2025). Original GitHub issue: https://github.com/fosrl/olm/issues/25 On Debian 13 amd64 server, I try to connect Olm client to my Pangolin (Gerbil) instance only via ipv6. The goal is to establish a site to site connection to my Newt instances. ``` root@debian-amd64:/usr/local/bin# systemctl status olm --no-pager -l ● olm.service - Olm Loaded: loaded (/etc/systemd/system/olm.service; disabled; preset: enabled) Active: active (running) since Thu 2025-09-04 01:06:29 CEST; 12min ago Invocation: ce950cb0c60b4ebdb010192d004f8228 Main PID: 1070661 (olm) Tasks: 19 (limit: 76567) Memory: 12.2M (peak: 13M) CPU: 241ms CGroup: /system.slice/olm.service └─1070661 /usr/local/bin/olm --id <redacted> --secret <redacted> --endpoint <redacted> --holepunch Sep 04 01:06:30 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:30 UDP hole punch goroutine ended for all exit nodes Sep 04 01:06:30 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:30 UDP hole punch goroutine ended Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 UAPI listener started Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Started monitoring for site 2 at 100.90.128.1:64639 Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Configured peer Q9hjJ19LYyA/wewcekHXdH7q7MpMb/pMt+YRfDh2wVc= Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 Started monitoring peer 2 Sep 04 01:06:31 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:31 WireGuard device created. Sep 04 01:06:34 debian-amd64 olm[1070661]: WARN: 2025/09/04 01:06:34 Peer 2 is disconnected Sep 04 01:06:34 debian-amd64 olm[1070661]: INFO: 2025/09/04 01:06:34 Sent relay message Sep 04 01:06:34 debian-amd64 olm[1070661]: ERROR: 2025/09/04 01:06:34 Failed to configure WireGuard device: IPC error -22: failed to set endpoint 2a01:cb05:810e:bb00:9876:5432:1098:7654:21820: invalid ip:port "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:21820", IPv6 addresses must be surrounded by square brackets ``` I redacted my ipv6 but the DNS entry was correct. I did encounter [this issue](https://github.com/fosrl/olm/issues/8) before too with the previous Olm version, but with the current **Olm version 1.1.1** the issue is no more related to colons but brackets now as you can see.
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Reference: github-starred/olm#1388