[OZAPRS] AX25 under Debian sending non APRS packets

[Adrian Snell]

Hi Craig
It appears that 192.168.1.1 is sending a broadcast (assuming the net mask
is
255.255.255.0). If you can capture the data in the UDP frame (say with TCP
chat) then you can see what the cause is. Depending on what the routes on
the box are, this could be due to other interfaces (ethernet etc) on the
box
needing data eg anything from address resolution, SNMP even possibly DHCP
etc etc

Regarding the other problem of needing to be root. This is most likely a
permissions problem with the dev files. Make sure that whatever user is
going to run the AX25 has read/write permissions for the ax0 device.

regards

Adrian VK5ZSN

----- Original Message ----- 
From: "Craig Turner" <craig at craigturner.id.au>
To: <vk3jfk at amsat.org>; "VK / ZL APRS Users" <ozaprs at aprs.net.au>
Sent: Saturday, April 29, 2006 11:24 AM
Subject: [OZAPRS] AX25 under Debian sending non APRS packets


> Hi,
>
> I'm running the latest version of Debian and using an TNC-X. I have
> configured AX25 in accordance with the AX 25 How To (I think!!) and am
> running xastir.
>
> I want to run APRSD, so that I can have a headless box relaying APRS
data
> within my home network.
>
> At the moment its all working almost perfectly. I can only use the AX0
> interface as root, so at the moment I have to run xastir as root to
access
> the radio port. I am not sure how to resolve this at the moment, it may
be
> because I am starting the ax25 interface from a console script as root.
> Anyway, thats not my main problem...
>
> xastir transmits and recieves fine, but occasionally (appears to be
about
> 10 minute intervals, but not 100% sure) the TNC sends a packet that goes
> for about 20 seconds or so.
>
> I've managed to decode the packets and they are:
>
> VK1HCT-1>QST>UI,?
>   IP: UDP, Source: 192.168.1.1, Dest: 192.168.1.255, Len: 252
> VK1HCT-1>QST>UI,?,CC
>   IP: UDP, Source: 192.168.1.1, Dest: 192.168.1.255, Len: 33
> VK1HCT-1>QST>UI,?,CC
>   IP: UDP, Source: 192.168.1.1, Dest: 192.168.1.255, Len: 235
>
> 192.168.1.1 being the IP number I have assigned to AX0 port. It looks to
> me like some process is either pinging the port or sending a beacon. At
> this point APRSD isn't running.
>
> Any suggestions for where to start looking? I want to be able to leave
the
> station on 24hrs a day, but at the moment I don't want it to congest the
> network with these packets.
>
> Regards
> Craig
> VK1HCT
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> Ozaprs at aprs.net.au
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