Description
This article explains why below error will apply when VPN is configured into the FortiGate with dynamic IP interface.
'interface <interface name> IP is 0, VPN=<vpn name>'
Solution
If VPN manager is configured with VPN configuration mesh mode, start mode and hub in the dial-up mode on a dynamic interface.
When the policy gets to be installed, the following warning will show up:
'interface <fortiextender interface> IP is 0, VPN=< VPNname>'
This is by design.
If dynamic IP is being used for the interface like DHCP, or Fortiextender interface, the interface of the FortiGate will show in the Fortimanager as 0.0.0.0