Solved AX88U Wireguard Issue

[shanetrain]

I looked around and really couldn't find anything specific to my issue.

I have Wireguard setup as a client which routes my entire LAN through the tunnel.

In VPN Director, I have specific clients excluded from WG1 and use the WAN.

To make the issue as specific as possible, for whatever reason, with the WG Client on, it cuts my upload bandwidth on my wired clients that are excluded from the tunnel by 2/3rds.

I turn WG off, full bandwidth, up and down from my ISP.

WG on, excluded clients upload speed is cut by 2/3rds, download speed is not affected either way.

I have played around with the WG MTU and it doesn't make any difference.

I only have the 1 Client, no other VPN or WG clients/servers, etc.

RT-AX88U Pro
Latest Merlin
Fiber symmetrical 2.5

Any help or suggestions are appreciated!

 

[Tech9]

Most likely because flow cache bypass works one way only. Something we discussed recently in this thread:

Wireguard benchmark test on RT-BE96U

I took advantage of an Holidays discount to subscribe to a ProtonVPN account, to do better Wireguard testing than with my single core VPS. The results are interesting - better than I was expecting I'd say on my RT-BE96U: I have a 1 Gbps symetric fiber connection.

www.snbforums.com

It's a Broadcom thing, no much details, just observations. You have nothing to fix there, it's the way it works.