The router is behind a Netgear CM2050V cable router with Xfinity service and I am running Windows 11 Pro. 

I am tring to get a CISCO L2TP/IPsec VPN to work using the Windows built in VPN client.  IPsec passthrough is enabled and I even turned off all of the ALG setting and disabled the firwall completely and I still can not get the VPN to work.  The CISCO side is confirured correctly as the VPN is working on a Windows 10 computer located elsewhere.  A one time I tried the VPN clint in the Archer router and I couldn't get it to work.

What am I missing?  The VPN used to work a couple of years ago when I was using an older Xfinity gateway and Windows 10.