"Good morning everyone, I have noticed that quite frequently after a standby of at least 8-10 minutes, the VPN does not work immediately upon resuming, and it takes at least 20 seconds to reconnect. I suspect that the WIFI CHIP partially disconnects during standby, perhaps for energy-saving purposes, and the VPN needs to auto-reconnect after the stand-by. This issue occurs with different versions of the IOS, including the latest one. Can someone help me understand if this is just my problem or a known issue? Thank you very much!"
VPN temporary disconnection after the stand-by
I also encountered this problem and there is no solution yet. Have you solved it?