[asterisk-bugs] [JIRA] (ASTERISK-24210) T.38 UDPTL Frames are sent to wrong destination IP

[Daniel Steglich (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Steglich updated ASTERISK-24210:
---------------------------------------

    Attachment: asterisk-fax-env.txt

> T.38 UDPTL Frames are sent to wrong destination IP
> --------------------------------------------------
>
>                 Key: ASTERISK-24210
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24210
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_fax
>    Affects Versions: 11.11.0
>         Environment: Linux vargas 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux
> compiled asterisk from here:
> http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-11-current.tar.gz
>            Reporter: Daniel Steglich
>            Assignee: Matt Jordan
>         Attachments: asterisk-cli-debug.txt, asterisk-fax-env.txt, extensions.conf, sip.conf
>
>
> I configured a Fax2Mail extension (details see extensions.conf)
> Now I delete the following lines from sip.conf (see attached)
> nat=comedia
> t38pt_usertpsource=yes
> Then send a Fax from my peer 550000 to 429 (with T.38 enabled).
> Asterisk is sending re-invite and switching to T.38 which works fine.
> But the "connection information" from the "200 OK with SDP" from the client will be ignored.
> This means, when I start network trace on ethernet Interface connected to my peer, I do not see any udptl frames. When I start network trace on "lo" Interface of debian Server, I can see the udptl Frames (destination IP = IP where asterisk is bound to i.e. IP adress of eth1) which are rejected with icmp port unreachable.
> when adding the lines from above:
> nat=comedia
> t38pt_usertpsource=yes
> udptl is sent correctly.



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