NLB cluster %2]: The NLB driver has detected one or more %3 sessions corresponding to a port rule that is improperly configured. ...

NLB cluster [%2]: The NLB driver has detected one or more %3 sessions corresponding to a port rule that is improperly configured. To handle VPN traffic properly, the port rule must be configured with single or network affinity and the port range must include TCP port 1723 for PPTP/GRE and UDP ports 500/4500 for IPSec/L2TP.