Re: How to configure a AX25 interface ?

On Wed, 2015-09-09 at 07:28 +0200, Jean-Christian de Rivaz wrote:

I have successfully setup a AX25 interface and NM see it this way:
nmcli d
ax0      unknown   connected    ax0
eth2     ethernet  unavailable  --
ttyACM0  gsm       unavailable  --
lo       loopback  unmanaged    --
sit0     sit       unmanaged    --
wlan2    wifi      unmanaged    --

The ax0 interface have only a IP address (configured while creating
ifconfig ax0
ax0       Link encap:AMPR AX.25  HWaddr MENHIR-6
           inet addr:  Bcast: 
           UP BROADCAST RUNNING  MTU:256  Metric:1
           RX packets:832 errors:14 dropped:0 overruns:0 frame:0
           TX packets:688 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:10
           RX bytes:74961 (73.2 KiB)  TX bytes:89851 (87.7 KiB)

How can I configure NM to add a static default gateway and a static
server when, and only when, NM have to use the ax0 interface ? This
on a Debian Jessie system, so there is no /etc/sysconfig directory.

The device ax0 was created and upped outside of NM's knowledge, so NM
created a temporary connection "ax0" to reflect that external setup.
This is what you see as active in `nmcli d`.
You can modify and reuse this created connection, or create a different
connection (possibly deleting the generated one).

Note that NM doesn't understand AX25 devices, but it should still work
to do Layer3/IP configuration. In general such unknown devices is
treated as "generic".
If you look at the created connection
   `nmcli connection show ax0`
you should see that it's of connection.type=generic.

Basically, adjust the generic connection to have the settings you want.
See `man nm-settings` for possible options. Especially the "ipv4"


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