Dynamic DNS with a python script

[Marcelo de Moraes Serpa]

Hello list,

I'd like to set up ssh access to my home computer so that I will be able to
access it from work - for this no problem, installing sshd is
straightforward.

The issue here is that I don't have a fixed IP connection at home. Also, I
wouldn't like to use services such as no-ip or similar.

What I thought was of writing a python program that would detect when the
internet network interface was restarted/started for the first time and then
update a DNS record at my DNS server where I would have a subdomain that for
my home machine's host.

However, I have no idea on how I could detect if the network has been
restarted nor how I could update this DNS record. Any suggestion would be
greatly appreciated :)

Thanks in advance,

Marcelo.
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