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Bug #16705

closed

Automatic gateways for OpenVPN peer-to-peer servers with a ``/30`` tunnel network do not use the peer address

Added by Georgiy Tyutyunnik 6 months ago. Updated 6 months ago.

Status:
Resolved
Priority:
Normal
Assignee:
Marcos M
Category:
OpenVPN
Target version:
2.9.0
Start date:
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
26.03
Release Notes:
Default
Affected Version:
2.9.0
Affected Architecture:

Description

re-created from https://redmine.netgate.com/issues/22042

OpenVPN SSL/TLS Site-2-Site scenario with /30 subnet and only one client behaves differently in 25.11.1 in comparison to 24.11
Previously you didn't need to manually create gateways and cso to communicate with 1 peer using the server with /30 subnet.
OpenVPN config and resulting interfaces and gateways from 24.11 and 25.11 attached

consistently reproducable this behavior.

Environment:

OpenVPN site-to-site configuration
Two peers only
Tunnel network defined as: 192.168.72.0/30
Interface type: assigned OpenVPN (ovpns) interface
Behavior in 24.11-RELEASE Expected / Working
The assigned OpenVPN (ovpns) interface received:

Interface IP: 192.168.72.1
Gateway: 192.168.72.2 (remote peer tunnel IP)
Static routes that used the OpenVPN gateway worked correctly.
Connectivity to the remote peer’s local subnet was fully functional (ping and routing OK).

Interfaces, gateways, openvpn configs and screenshots are attached

Files

Download all files
issue-22042-attachments.zip (190 KB) issue-22042-attachments.zip Georgiy Tyutyunnik, 02/17/2026 04:50 PM
25-07ovpn.xml (3.65 KB) 25-07ovpn.xml Georgiy Tyutyunnik, 02/17/2026 04:52 PM
25-11ovpn.xml (3.57 KB) 25-11ovpn.xml Georgiy Tyutyunnik, 02/17/2026 04:52 PM
clipboard-202602170912-pazaa.png (55.5 KB) clipboard-202602170912-pazaa.png Georgiy Tyutyunnik, 02/17/2026 04:52 PM
clipboard-202602170931-rsc9z.png (45.9 KB) clipboard-202602170931-rsc9z.png Georgiy Tyutyunnik, 02/17/2026 04:52 PM
clipboard-202602170913-by7na.png (53.9 KB) clipboard-202602170913-by7na.png Georgiy Tyutyunnik, 02/17/2026 04:52 PM
clipboard-202602170933-t7vmy.png (48.1 KB) clipboard-202602170933-t7vmy.png Georgiy Tyutyunnik, 02/17/2026 04:52 PM
config_ovpn_2507.txt (835 Bytes) config_ovpn_2507.txt Georgiy Tyutyunnik, 02/17/2026 04:52 PM
config_ovpn_2511.txt (841 Bytes) config_ovpn_2511.txt Georgiy Tyutyunnik, 02/17/2026 04:52 PM
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