L2TP VPN broken on MacOS 13/Ventura

Same here. After upgrade to Ventura 13.1 I can't use my GlobalProtect VPN client.

I had to remove and newly add the VPN connection in the MacOS settings. After that with the 2nd try to connect it works. Mysterious. (Cisco IPsec to a Lancom Router)

I can't use my GlobalProtect VPN client. Ventura 13.1

Ventura 13.1 L2TP IPSec break each 5 minutes with "No buffer space available", after that only disconnect and connect helps.

Running Ventura 13.2 now. The Apple Configurator method mentioned by @utahtrust and @jacobkward worked perfectly for connecting to my company VPN. Before, every time I tried to create a VPN config in the System Settings->Network tab, when I clicked Create after entering the config, the dialog disappeared and I still could not see my VPN connection. I checked Private Relay in my iCloud settings, and it was already disabled. So I tried using Configurator to create the VPN config, and followed the steps mentioned by @jacobkward and it worked perfectly on the first try. Thanks guys!

Ventura 13.2.1, VPN (any protocol) is simply unusable as it dies randomly and only manual reconnection helps. It's beyond frustrating, I cannot use any of my VPN providers on ANY connection!

More details:

https://openradar.appspot.com/radar?id=5614432642138112

Not working for me either. Vpn crashes when uploading a file larger than 2.5 mb. The installation via the Apple configurator connects in the right way. But the vpn keeps crashing.

The treat is you have to set the "Send all traffic over VPN connection" to be true

Did anyone find a way to resolve this issue. The thread has gone quiet. I am able to connect perfectly using 10.13.6 but not using 13.3 I have tried all the suggestions above without any luck.

I did some tests with Ventura 13.3 and got no more disconnexions while transfering big files. I also notice that I could manually add the default search domain name in the VPN DNS configuration. Before, When I added the domain search on the DNS settings, it disapeared all the time.

Yes I worked for me, I downloaded the Apple Configurator in the App Store, there is a list and choose VPN. Put your VPN details in there and save it with CMD+S. You save that file somewhere. When you double click that saved file choose for install, and my VPN worked directly. I was unable to start the VPN it when updating to Venture and configure it manually but it works good when using the Configurator !!

Make sure that verbose logging is turned off! This won't fix for everybody, but this was the source of my issue on Ventura

@utahtrust solution using apple configurator works i was able to finally get my VPN back up and running

L2TP-VPN stopped working today!

We resolve this with reconfigure our VPN server to OpenVPN and using external client, viscosity from sparklabs.