Occasional Contributor II

AP-2E not working

We have an AP connected at users home, the status of the AP shows as 'up' and online on the controller but the phone fails to work. It gets stucked @ 'Registering/Configuring IP' state. Below is the error which I can see in the logs.

Jul 26 14:09:42 isakmpd: <103038> |ike| Unable to find L2TP/IPSEC for deletion., IPSec-SPI 0x159b1600, L2TP tunnel 4094

Can anyone help me with this issue.