anchor.diff:        affect the sip authentication.  Please review conf/directory/default.xml for more
         information on this topic.
     -->
  -  <X-PRE-PROCESS cmd="set" data="domain=${{local_ip_v4}}"/>
  +  <X-PRE-PROCESS cmd="set" data="domain=$${local_ip_v4}"/>
     <X-PRE-PROCESS cmd="set" data="domain_name=$${domain}"/>
     <X-PRE-PROCESS cmd="set" data="hold_music=local_stream://moh"/>
     <X-PRE-PROCESS cmd="set" data="use_profile=internal"/>
  
positive.code:        use different addresses where this variable appears.
         Used by: dingaling.conf.xml
    -->
    <X-PRE-PROCESS cmd="set" data="bind_server_ip=${{local_ip_v4}}"/>
  
    <!-- NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE
         
  
negative.code:        If unspecified, the bind_server_ip value is used.
         Used by: sofia.conf.xml dingaling.conf.xml
    -->
    <X-PRE-PROCESS cmd="set" data="external_sip_ip=$${external_ip}"/>
  
    <!-- unroll-loops
         Used to turn on sip loopback unrolling.
  