iOS client cannot connect to Network / Network routers

[qiangxinglin]

Describe the problem

iOS client can successfully connect to the device through the netbird assigned IPs (starts with 100.127), but failed to connect through remote devices' private IP (or remote subnet).

To Reproduce

1. iOS on LAN1 join netbird, in "all" group, get netbird IP 100.127.0.1
2. Linux on LAN2 join netbird, with static LAN ip 10.10.0.1, advertise network 10.10.0.0/16 to "all" group, get netbird IP 100.127.0.2
3. Windows on LAN1 join netbird, in "all" group, get netbird IP 100.127.0.3

Actual behavior

iOS device failed connect to the service on Linux server through 10.10.0.1:PORT, but success on 100.127.0.2:PORT, also failed to other subnet device service (e.g. 10.10.0.2:PORT2)
Windows device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT, and success on other subnet devices.

Expected behavior

iOS device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT
Windows device can connect to the service on Linux server through both 10.10.0.1:PORT and 100.127.0.2:PORT, and success on other subnet devices.

Are you using NetBird Cloud?

Yes, using NetBird Cloud

NetBird version

iOS: 0.36.4-dev
Linux: 0.44.0
Windows: 0.44.0

Is any other VPN software installed?

Linux install tailscale but down (tailscale down)
iOS, Windows: No

Debug output

Sensitive, contact privately to supply.

We advise reviewing the anonymized output for any remaining personal information.

Screenshots

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Additional context

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Have you tried these troubleshooting steps?

• Checked for newer NetBird versions
• Searched for similar issues on GitHub (including closed ones)
• Restarted the NetBird client
• Disabled other VPN software
• Checked firewall settings