Ip address issue

```
What steps will reproduce the problem?
1. Setup a local sip server(opensips/asterisk) in local network.(e.g 10.10.4.58)
2. Enable 3G connection and got the public ip address at android phone. (e.g.
42.70.185.89)
3. Enable WIFI connection instead of 3G connection and got the internal ip
address at android phone.(e.g. 192.168.3.202)
4. Setup identity & network(enable wifi only) options in Imsdroid.
5. Click on "Sign In" button in Imsdroid.

What is the expected output? What do you see instead?
Expect to connect & register to the local sip server but timeout.

What version of the product are you using? On what operating system?
imsdroid: 2.0.504, 2.0.509
android: 4.0.3

Please provide any additional information below.
use Wireshark to capture the packages and find a wire problem in the source
field,
the ip address of mobile should be the internal ip address(e.g. 192.168.3.202),
but the ip address seems to be provoid by the phone carrier with 3G
connection(e.g. 42.70.185.89).
when Imsdroid try to connect to the local sip server before timeout,
type the command "busybox ifconfig" in the terminal and it show the internal ip
address(192.168.3.202) at interface wlan0,
also tried to connect to the sip server at same time with other sip
app(Csipsimple) and it's work.

### log of imsdroid
No. Time Source Destination Protocol Length Info
144 43.928346 42.70.185.89 10.10.4.58 SIP 982 Request: REGISTER sip:10.10.4.58
::'E@@EB*FY

:7\REGISTER sip:10.10.4.58 SIP/2.0
Via: SIP/2.0/UDP 42.70.185.89:51767;branch=z9hG4bK1628927745;rport
From: ;tag=1407725481
To:
Contact:
;expires=1700;+g.oma.sip-im;language="
en,fr";+g.3gpp.smsip;+g.oma.sip-im.large-message;audio;+g.3gpp.icsi-ref="urn%3Au
rn-7%3A3gpp-application.ims.iari.gsma-vs";+g.3gpp.cs-voice
Call-ID: 98ec0d76-7500-6022-a8ef-651451068bbd
CSeq: 1737328324 REGISTER
Content-Length: 0
Max-Forwards: 70
Authorization: Digest
username="003",realm="10.10.4.58",nonce="",uri="sip:10.10.4.58",response=""
Allow: INVITE, ACK, CANCEL, BYE, MESSAGE, OPTIONS, NOTIFY, PRACK, UPDATE, REFER
Privacy: none
P-Access-Network-Info: ADSL;utran-cell-id-3gpp=00000000
User-Agent: IM-client/OMA1.0 android-ngn-stack/v2.0.509 (doubango r738 - HTC
Sensation XL with Beats Audio X315e)
P-Preferred-Identity:
Supported: path

### log of CsipSimple
No. Time Source Destination Protocol Length Info
8199 5688.335886 192.168.3.202 10.10.4.58 SIP 607 Request: REGISTER
sip:10.10.4.58
::'EQ@@e

:=3REGISTER sip:10.10.4.58 SIP/2.0
Via: SIP/2.0/UDP
192.168.3.202:43238;rport;branch=z9hG4bKPjr.zE24RJc71Y3G6NdtR-Y20TnnJB52cZ
Max-Forwards: 70
From: "003@10.10.4.58" ;tag=O0vg2qE4qCsbh4N-2eG4BCD1RS4Ht6Os
To: "003@10.10.4.58"
Call-ID: -ougIqa0VANk2y-SYnTpANe4RfsGt4Mj
CSeq: 54794 REGISTER
User-Agent: CSipSimple_runnymede-15/r1916
Contact: "003@10.10.4.58"
Expires: 900
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER,
MESSAGE, OPTIONS
Content-Length: 0

```

Original issue reported on code.google.com by `marlboro...@gmail.com` on 9 Oct 2012 at 10:11

No source files or tests are named. Reproduce on Android 4.0.3 with Wi-Fi, a local OpenSIPS or Asterisk server, and the reported Imsdroid versions; compare the SIP REGISTER source, Via, and Contact addresses with the CSipSimple capture. Done means local registration uses the phone's Wi-Fi address and no longer times out.

Written by the indexing model from the issue text.