This object indicates whether this interface is a private or public WAN link. This object is applicable only for PPP interfaces and ethernet WAN interfaces. For other interfaces the value cannot be set and a get always returns the value OTHER. For PPP and ethernet WAN interfaces the default value is PUBLIC. By default, public WAN links, have a default route associated with them. When the WAN type is set as PRIVATE, no default route is created for this interface. The value OTHER can never be set. For changing the type of a WAN interface, the interface must be brought down first - changing WAN type while the interface is administratively up is not permitted.