On 22/03/2019 11:15, Roby wrote:
> Roby wrote, on 22/03/2019:
>> Roby wrote, on 22/03/2019:
>> ---- cut
>>> This is my /etc/apt/sources.list:
>>> -----
>>> deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib
>>> non-free rpi
>>> # Uncomment line below then 'apt-get update' to enable 'apt-get source'
>>> #deb-src http://archive.raspbian.org/raspbian/ jessie main contrib
>>> non-free rpi
>>> --------
>> ---- cut
>>
>> What does not work is the RPI3 that I have in the remote location 500
>> km away from here (internet with router and 4G USB key)
>> The second RPI3 that I have here at home with ADSL/FTTH has the exact
>> same /etc/apt/sources.list as the remote one and IT WORKS!
>> :-?
>
> Not being able to install new functions to manage eth0, such as iperf3
> (...as already written also in this case I have error 404...), I checked
> how it works eth0 with sudo mii-tool
> This is the result:
> eth0: negotiated 1000baseT-HD flow-control, link ok
> So it seems that the problem is not caused by eth0.....
> ;-)
> I do not know what to do..........
>

start by doing a DNS looukpo ON the REMOTE machine - I assume you have
at least ssh access - to see if it can understnd what IP address the
repository is on.

If that fails, fix DNS.

If it works try maybe pinging the repository address - Failure is not
necessarily an issue but success shows its visible over the internet.


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