Transformation Failed Problems: 1: Error: Network 'HUB1-LAN1' is not a valid IPv4 address"
This might be happening because variables are configured in the current site but not on other sites.Typically variables are defined per site. If you configure variable for Site-1 but not for Site-2 then you will face this problem.When "Advertised via Overlay" is enabled with variable, then the same variable must be defined in all sites.