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SPA8000 trunk with nat trouble

Hello!

I'm using SPA8000 with firmware 6.1.10(001). SPA connected via linux box with symmetric nat.

http://clip2net.com/clip/m67584/1317112242-clippe5060-6kb.png

It's work fine with standalone line. But if trunk used (with NAT support) - all IP replaced by 127.0.0.1

INVITE sip:xxx@xxx SIP/2.0

Via: SIP/2.0/UDP 127.0.0.1:5060;branch=z9hG4bK-2525c8c7;rport

From: xxx <sip:xxx@xxx>;tag=54afb7322d3d1aco2;ref=1

To: <sip:xxx@xxx>

Remote-Party-ID: xxx <sip:xxx@xxx>;screen=yes;party=calling

Call-ID: 2b8d083f-59564b50@xxx

CSeq: 101 INVITE

Max-Forwards: 70

Contact: xxx <sip:xxx@127.0.0.1:5060>

Expires: 240

User-Agent: Linksys/SPA8000-6.1.10(001)

Allow-Events: talk, hold, conference

Content-Length: 432

Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER

Supported: x-sipura, replaces

Content-Type: application/sdp

v=0

o=- 7170 7170 IN IP4 127.0.0.1

s=-

c=IN IP4 127.0.0.1

t=0 0

"External IP" from status page is 192.168.19.230 if no lines added to trunk and 127.0.0.1 if one or more lines added to trunk.

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