f6a461ee_IPsec_VPN___UntangleWiki__Description
[Name] Interface [Description] 
This field allows you to select the network interface that should be associated with the IPsec tunnel on the Untangle server. When you select a valid interface, the Local IP field (see below) will automatically be configured with the corresponding IP address. If for some reason you want to manually configure an IP address that is not currently active, you can set the Interface to Custom and manually input the IP address below.
IPsec VPN - UntangleWiki
Description