On Thu, Apr 11, 2019 at 05:02:46PM +0100, mick crane wrote: > I think that is what dynamic ip address services do, change the ipaddress > but the service has to be on the ISP's router ? > Do I understand correctly then when your isp/home address changes your box > broadcasts its domain new address to the internet ?
It doesn't have to be on the router. You can set up a hook in Debian to run an arbitrary command whenever your IP address is changed by DHCP. This hook receives the old and new IP addresses, and some other things, as environment variables. It's about 3 lines of code to set it up. No parsing of the output of any ip or ifconfig command is needed. https://mywiki.wooledge.org/IpAddress
