Fortigate Phase 2 VPN Down then goes back up – request is on the queue

Enable Logging

diagnose vpn ike log-filter

diagnose vpn ike log-filter dst-addr4 %PUBLICIPOFDESTINATIONFIREWALLVPN%

diag debug app ike -1 
diag debug enable

The Logs showed this

ike 0:VPN_SYD:VPN_MEL: using existing connection

ike 0:VPN_SYD:VPN_MEL: config found

ike 0:VPN_MEL: request is on the queue

Dead Peer Detection on either side was different

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