Re: get my ip address
- Date: Tue, 19 Feb 2019 12:06:28 -0500
- From: Greg Wooledge <wooledg@xxxxxxxxxxx>
- Subject: Re: get my ip address
On Tue, Feb 19, 2019 at 11:36:49AM -0500, Dan Ritter wrote:
> tony wrote:
> > I have a network of IoTs consisting of 5 (I think) Paspberry Pis,
> > monitoring various things, and periodically sending the data to my VPS.
> > I need access to these hosts to manage them.
> > The network supplier is Orange France (spit!) who supply a dynamic DNS
> > on both IPv4 and IPv6. I need to access any of them.
> That sounds like a job for a dynamic dns client.
> existing Debian packages:
> ddclient (multiple backend services supported)
> ddupdate (also supports multiple services, more plugin-oriented)
> dyfi (Finnish users only)
> dyndns (multiple services)
> ez-ipupdate (multiple services)
> ipcheck (dyndns protocol specific, but many services use it)
> isc-dhcp-client-ddns (adds dynamic dns to DHCP)
And the specific case of dynamic DNS updates is definitely covered
on the wiki page that I linked (https://mywiki.wooledge.org/IpAddress).
It even has sample code for Debian 8.
If you need to use a special python dynamic DNS client for some reason,
that's fine. Just hook it from the dhclient-exit-hooks.d directory and
let it use the new_ip_address environment variable. The example is
right there on the wiki page. Just replace /usr/local/sbin/dync with
your python program (assuming it takes the IP address on the argument list).
Oh... wait, you said IPv6 in the original message, right? Ugh. I don't
know IPv6 myself, but fortunately we can look that up... um, somewhere!
wooledg:~$ man dhclient-script | grep 6
$new_dhcp6_server_id. The options that the client explicitly requested
... OK, apparently not *there*.
But looking through /sbin/dhclient-script itself, there appear to be
the following variables:
Maybe those will help? Give it a shot. Or wait for someone who knows IPv6
to chime in.