[mythtv-users] setting up a AirTV Anywhere tuner with MythTV

[James Abernathy]

On Fri, Jun 24, 2022 at 2:23 PM Greg Oliver <oliver.greg at gmail.com> wrote:

> On Fri, Jun 24, 2022 at 1:14 PM James Abernathy <jfabernathy at gmail.com>
> wrote:
>
>>
>>
>> On Fri, Jun 24, 2022 at 12:05 PM Greg Oliver <oliver.greg at gmail.com>
>> wrote:
>>
>> Everything spunds like it should work - you just need the commands to
>>> tune it, which Sling obviously sends it.  Once those commands are
>>> discovered, you should have no issues.  I am asuming Sling can also use it
>>> to watch liveTV.
>>>
>>> -Greg
>>>
>>
>> Your assumption is correct.  In fact my use case at this point is for
>> liveTV watching only. It allows for quick switching from ESPN to CBS OTA
>> for example.
>>
>> Can anyone recommend a good software tool for capturing packets for a
>> particular IP address?
>>
>> Jim A
>>
>
> tcpdump on any linux box will suffice.  If you can get the IP of Sling as
> well as AirTV, then a filter would be:
>
> tcpdump -i <ethernet interfce> -nn -s0 -w dump.cap host <ip of AirTV> or
> host <ip of Sling>
>
> after that, the dump.cap file can be opened in Wireshark to filter through
> it.
>
>
Sorry for the dumb question but here goes.  The -i option must be the
device name for my wifi on my laptop, right? that interface will not see
any packets addressed to it to/from the AirTV.

when I did:  sudo tcpdump -i wlp0s20f3 -nn -s0 -w dump.cap host
192.168.0.154
I started watching OTA tv on which should have caused traffic between the
AirTV 192.168.0.154 and my FireTV stick 192.168.0.107.

But when I ctrl-c'ed to stop tcpdump, it captured 0 packets.  Which sort of
makes sense because the laptop is on 192.168.0.122

Can the laptop act like a monitor and watch the traffic? All my devices are
on 192.168.0.xx

Jim A
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