DNS.Servers.Auto.Pushed.Primary

#!/bin/sh

scutil_query()
{
    key=$1

    scutil<<EOT
    open
    get $key
    d.show
    close
EOT
}

SERVICE_GUID=`scutil_query State:/Network/Global/IPv4 | grep "PrimaryService" | awk '{print $3}'`

SERVICE_NAME=`scutil_query Setup:/Network/Service/$SERVICE_GUID | grep "UserDefinedName" | awk -F': ' '{print $2}'`

echo $SERVICE_NAME

PRIMARY_SERVICE=`networksetup -listnetworkserviceorder |tail +2 |grep "$SERVICE_NAME" |grep "en" |awk '{print $5}'| grep "en" | awk '{print substr($1,0,3)}'`

DNS=$(ipconfig getpacket "$PRIMARY_SERVICE" | grep domain_name_server | awk '{print $3 " " $4 " " $5 " " $6}')
DNSServers=$(echo $DNS | awk -F '{|}' '{print $2}')

if [[ ${DNSServers} == "" ]]; then
    echo "<result></result>"
else
    echo "<result>$DNSServers</result>"
    exit 0
fi