Usually, RA VPN is used to connect from outside (Internet), not from internal networks / local LAN - so we have a special parameter in Advanced Settings:
VPN Remote Access - Auto-disconnect in VPN domain
bool
default value: true
Indicates if the client disconnects automatically to save resources when it connects from inside the secured internal network (local encryption domain)
As the default is to disconnect RA VPN when located in the local encryption domain, you have to change this to false to be able to connect successfully !
CCSP - CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist