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Bug #11896

closed

Packet loss with multiple OpenVPN client connections

Added by Keith Townsend over 3 years ago. Updated over 3 years ago.

Status:
Rejected
Priority:
Normal
Assignee:
-
Category:
Gateway Monitoring
Target version:
-
Start date:
05/05/2021
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Release Notes:
Default
Affected Version:
2.5.1
Affected Architecture:
All

Description

Packet loss with multiple OpenVPN client connections. This started occurring after Release candidate 2.5.1.r.20210403.0300. This happens if upgrading or a clean install and affects 2.5.1 as well as 2.6X.
Steps to reproduce.
1> Create 4 OpenVPN client connections to VPN provider (I use Torguard) Create the corresponding gateway interfaces and pass through rules
2> assign the created interfaces to a gateway group.
Openvpn client connections connect but 80%-100% packet loss on all four interfaces. WebGui slows to a 30+ seconds response time. Dpinger logs reflect this packet loss as expected. No other problems in the logs noted. If the total number of OpenVPN client Gateways is reduced to 2 instead of 4 then the packet loss is reduced below the failover threshold and a stable connection is usually possible. Multiple gateway monitor IP's were attempted with same results.
When gateway monitoring is disabled on these interfaces interfaces work as expected but without failover capability.
Hardware used is Core-I5 virtualized with NIC passthrough AES-NI enabled 8GB memory.

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