Thanks for your code. I will try to use it with /dev/urandom to generate a 
random hostname...

I will post my findings

Dominique

On Tuesday, February 28, 2017 at 11:24:31 AM UTC-5, steve.coleman wrote:
> On 02/27/2017 03:48 PM, Dominique St-Pierre Boucher wrote:
> > Hello,
> >
> > I have setup the mac address change for qubes 3.2 with debian 9 as my 
> > sys-net.
> >
> > I am trying to figure out a way to randomize the hostname that is sent to 
> > the DHCP server. This is in an effort to minimize the risk of os 
> > identification.
> 
> I'm not quite sure why you need to hide you hostname on your local DHCP 
> network. Is the purpose so that you "feel" more hidden? Anyone running 
> p0f on your local network will guess your OS regardless of your 
> IP/MAC/hostname randomization, and people outside your domain won't have 
> your MAC or DHCP hostname, just your IP unless you/IT publish your name 
> through DNS to the outside.
> 
> 
> But, You could try:
> 
> sys-net>$ nmcli general hostname
>                 <<< mine was empty
> sys-net>$ sudo nmcli general hostname xyzpdq.nowhere.com
> sys-net>$ sudo systemctl restart systemd-hostnamed
> sys-net>$ nmcli general hostname
> xyzpdq.nowhere.com
> sys-net>$ cat /etc/hostname
> xyzpdq.nowhere.com
> 
> 
> You may need to disconnect and reconnect to get the DHCP server lease to 
> acknowledge a change. Mine did not propagate to DNS right away but 
> eventually did.
> 
> nmcli --help
> 
> > Dominique
> >

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