freeswitch@sp0559b> recv 476 bytes from udp/[200.121.18.89]:16630 at 00:47:04.580451:
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   REGISTER sip:69.60.109.39:5080 SIP/2.0
   Via: SIP/2.0/UDP 192.168.1.200:5061;branch=z9hG4bK-3595b676  <!--- this is the LOCAL ip on my local LAN
   From: 4765 <sip:4765@69.60.109.39:5080>;tag=405698fbda9d760f   <--- this is a lie, its coming from my dsl line that has a completely different address
   To: 4765 <sip:4765@69.60.109.39:5080>      
   Call-ID: b0a8a19b-7e7205ef@192.168.1.200
   CSeq: 14 REGISTER
   Max-Forwards: 70
   Contact: 4765 <sip:4765@192.168.1.200:5061>;expires=19   <!--- this is the LOCAL ip on my local LAN
   User-Agent: Sipura/SPA2000-2.0.2
   Content-Length: 0
   Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER
   Supported: x-sipura

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send 533 bytes to udp/[200.121.18.89]:5061 at 00:47:04.580946:
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   SIP/2.0 200 OK
   Via: SIP/2.0/UDP 192.168.1.200:5061;branch=z9hG4bK-3595b676;received=200.121.18.89  <--- the first addr is LOCAL ip, 2nd is my external IP of the DSL line.  but if freeswitch tries to send to port 5061 on external IP it probably wont work because NAT has a different external port which maps back to port 5061 on the sipura box.
   From: 4765 <sip:4765@69.60.109.39:5080>;tag=405698fbda9d760f
   To: 4765 <sip:4765@69.60.109.39:5080>;tag=752m7XKNBcjXQ
   Call-ID: b0a8a19b-7e7205ef@192.168.1.200
   CSeq: 14 REGISTER
   Contact: 4765 <sip:4765@192.168.1.200:5061>;expires=19
   User-Agent: FreeSWITCH(mod_sofia)
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE, NOTIFY, REFER, UPDATE, REGISTER, INFO
   Supported: 100rel, precondition
   Content-Length: 0

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