Soundmodem - suppresing initial xmit

Soundmodem - suppresing initial xmit

[don]

When I start soundmodem, it sends out several transmissions.
They are addressed to "QST-0" and identify my workstation.

Is there a simple way to suppres these?  They are fairly long
and sometimes I just want to listen to packets (like on an APRS freq).

Don - W7DMR

Re: Soundmodem - suppresing initial xmit

[Curt, WE7U]

On Fri, 16 Nov 2007, don wrote:

> When I start soundmodem, it sends out several transmissions.
> They are addressed to "QST-0" and identify my workstation.
>
> Is there a simple way to suppres these?  They are fairly long
> and sometimes I just want to listen to packets (like on an APRS freq).

Just a guess (and I'm probably totally wrong on this), but do you
have Samba configured on that machine?

I remember some people ended up with SMB broadcasts going out on
that interface.  The fix was to tweak the Samba configuration so
that it didn't use that networking interface.  By default Samba
broadcasts on all interfaces as I recall.

--
Curt, WE7U: <www.eskimo.com/~archer/>     XASTIR: <www.xastir.org>
  "Lotto:  A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
The world DOES revolve around me:  I picked the coordinate system!

Re: Soundmodem - suppresing initial xmit

[J. Lance Cotton]

on 11/16/2007 10:48 AM Curt, WE7U said the following:
> On Fri, 16 Nov 2007, don wrote:
> 
>> When I start soundmodem, it sends out several transmissions.
>> They are addressed to "QST-0" and identify my workstation.
>>
>> Is there a simple way to suppres these?  They are fairly long
>> and sometimes I just want to listen to packets (like on an APRS freq).
> 
> Just a guess (and I'm probably totally wrong on this), but do you
> have Samba configured on that machine?
> 
> I remember some people ended up with SMB broadcasts going out on
> that interface.  The fix was to tweak the Samba configuration so
> that it didn't use that networking interface.  By default Samba
> broadcasts on all interfaces as I recall.

That's right. Also, on many newer distributions, I've also found that the 
mDNS service (the generic name for Apple's "Bonjour" auto-discovery 
protocol) broadcasts on all interfaces, too.

-Lance KJ5O

-- 
J. Lance Cotton, KJ5O
joe@lightningflash.net
http://kj5o.lightningflash.net
Three Step Plan: 1. Take over the world. 2. Get a lot of cookies. 3. Eat the 
cookies.

Re: Soundmodem - suppresing initial xmit

[don]

Thanks for the replies on my soundmodem question.  However I don't think
they covered what is happening.

Here is what comes out whenever I start soundmodem:

-----------------------------------------------------------------------
Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E..~..@....r.............j..............._services._dns-sd._udp.local............_workstation._tcp.#.4...........reidmob1 [].4

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....................9.............reidmob1 []._workstation._tcp.local......reidmob1.*.....1.0.0.10.in-addr.arpa......5.......x.......D.......x...5.5.
.....x...I686.LINUX...!.....x.........5.............

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....................9.............reidmob1 []._workstation._tcp.local......reidmob1.*.....1.0.0.10.in-addr.arpa......5.......x.......D.......x...5.5.
.....x...I686.LINUX...!.....x.........5.............

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....1.............................reidmob1 []._workstation._tcp.local.............reidmob1.*.......x.......1.0.0.10.in-addr.arpa........x...<.<.
.....x...I686.LINUX...!.....x.........<

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E..~..@....r.............j..............._services._dns-sd._udp.local............_workstation._tcp.#.4...........reidmob1 [].4

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....1.............................reidmob1 []._workstation._tcp.local.............reidmob1.*.......x.......1.0.0.10.in-addr.arpa........x...<.<.
.....x...I686.LINUX...!.....x.........<

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....8...............]............._services._dns-sd._udp.local............_workstation._tcp.#.4...........reidmob1 [].4.T............T.!.....x.........reidmob1.#.........x......

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
E.....@....1.............................reidmob1 []._workstation._tcp.local.............reidmob1.*.......x.......1.0.0.10.in-addr.arpa........x...<.<.
.....x...I686.LINUX...!.....x.........<

Tx: fm W7DMR-0 to QST-0 UI  pid=CC
F..(..@................."...............
-----------------------------------------------------------------------

This mostly looks like some sort of networking stuff.

Don - W7DMR


On Fri, Nov 16, 2007 at 08:32:31AM -0800, don wrote:
> When I start soundmodem, it sends out several transmissions.
> They are addressed to "QST-0" and identify my workstation.
> 
> Is there a simple way to suppres these?  They are fairly long
> and sometimes I just want to listen to packets (like on an APRS freq).
> 
> Don - W7DMR
> -
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Re: Soundmodem - suppresing initial xmit

[Manfred Haertel, DB3HM]

don wrote:
> Thanks for the replies on my soundmodem question.  However I don't think
> they covered what is happening.
> 
> Here is what comes out whenever I start soundmodem:
> 
> -----------------------------------------------------------------------
> Tx: fm W7DMR-0 to QST-0 UI  pid=CC
> E..~..@....r.............j..............._services._dns-sd._udp.local............_workstation._tcp.#.4...........reidmob1 [].4

This looks like the "Multicast DNS daemon". It broadcasts on every
network device which is available. In most cases you don't need this
deaemon and can safeley remove it from the startup ("insserv -r mdnsd").

-- 
Manfred Härtel, DB3HM    mailto:Manfred.Haertel@rz-online.de
                          http://rz-home.de/mhaertel

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Re: Soundmodem - suppresing initial xmit

[don]

Thanks all for the help.  Yes it was the avahi daemon doing mDNS.

I ended up setting the following in /etc/avahi/avahi-daemon.conf

  publish-addresses=no
  publish-hinfo=no
  publish-workstation=no
  publish-domain=no

That stops the broadcasts when soundmodem starts.

It remains to be seen if anything else on the system (Ubuntu Gutsy
Gibbon) needs them.  The ubuntu-desktop package depends on avahi-daemon.

73
Don - W7DMR