[Freeswitch-users] ext-sip-ip, dyndns and NAT

[Rajil Saraswat]

Hello,

My pbx has a dynamic ip address and i am using the name
myhost.dyndns.org for it. Until now i have had the following settings:

vars.xml
<X-PRE-PROCESS cmd="set" data="external_rtp_ip=host:myhost.dyndns.org"/>
<X-PRE-PROCESS cmd="set" data="external_sip_ip=host:myhost.dyndns.org"/>

Internal profile
  <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
  <param name="ext-sip-ip" value="$${external_sip_ip}"/>

However, with this I was getting a public ip in the contact header of
the calls. So i had to change the internal profile to
  <param name="ext-rtp-ip" value="autonat:$${external_rtp_ip}"/>
  <param name="ext-sip-ip" value="autonat:$${external_sip_ip}"/>

Unfortunately with the above change the system is unable to resolve
the dns address and sofia status profile internal' shows

Ext-SIP-IP              host:myhost.dyndns.org

The calls fail randomly because of this. How can i use autonat with
the dynamic ip address?

Thanks
Rajil

PS: If i use the dynamic ip address in the the conf file, there is no
problem. (<X-PRE-PROCESS cmd="set"
data="external_sip_ip=aa.bb.cc.dd"/>)