append validate_forms "ip|FORM_${interface}_ipaddr|$interface @TR<<IP Address>>||$FORM_ipaddr" "$N"
	append validate_forms "netmask|FORM_${interface}_netmask|$interface @TR<<WAN Netmask>>||$FORM_netmask" "$N"
	append validate_forms "ip|FORM_${interface}_gateway|$interface @TR<<Default Gateway>>||$FORM_gateway" "$N"
	append validate_forms "ip|FORM_${interface}_pptp_server|$interface @TR<<PPTP Server IP>>||$FORM_pptp_server" "$N"