Symptom
Private RSA keys disappears after upgrade to 16.6.1 and reload of ISR4451-X/K9 router.
Initially router has been successfully upgraded from IOS 16.4.1 to 16.6.1. After next reload private RSA key was discarded.
Conditions
Router has been successfully upgraded from IOS 16.4.1 to 16.6.1 and then reloaded.
Router has WAAS installed
