Re: DHCP Range in Network Manager

["Peter Foulkes" <peter foulkes nilpanic co uk>]

----- Original Message ----- 
From: "Dan Williams" <dcbw redhat com>
To: "Peter Foulkes" <peter foulkes nilpanic co uk>
Cc: <networkmanager-list gnome org>
Sent: Tuesday, March 30, 2010 9:05 PM
Subject: Re: DHCP Range in Network Manager


> On Tue, 2010-03-23 at 21:41 +0000, Peter Foulkes wrote:
> > On Tue, 2009-09-22 at 15:41 -0500, Andy Ringsmuth wrote:
> >
> > > My question is this - the default range IP range dished out by
> > > NetworkManager is 10.42.43.10 to 10.42.43.254.
> > >
> > > I would like to change that to 192.168.1.10 to 192.168.1.99 but for
> > > the life of me I cannot figure out what to change to make that happen.
> >
> > And Dan Williams replied:
> > >Nope, it's currently hardcoded for user-created "shared" networks.
> > >Didn't really see a great need to change it at the time I did connection
> > >sharing last year.  Mind sharing your use-case here?  I'm curious.
> >
> > If I wanted to change the hardcoded IP would it just be a case of 
> > changing
> > the single reference to 10.42.43.1 that I can find in src/nm_device.c to 
> > the
> > range to suit my requirements?
> >
> > ...
> >  guint32 start = (guint32) ntohl (0x0a2a2b01); /* 10.42.43.1 */
> >  guint32 count = 0;
> > ...
>
> Yup, that would be the place.  To fix this for real, we allow users
> modify shared connections in the connection editor, then maybe add some
> keys to NMSettingIP4Config for "shared subnet" and "shared netmask".
>
> Dan

Thank you Dan for confirming that. I've made the change and it works 
perfectly for my configuration now.

If someone did decide to allow users to modify shared connections in the 
connection editor can I suggest it's done as an almost hidden feature. The 
simplicity of the shared connection option at present is beautiful. I think 
it's safe to say that 99% of users do not need to even know nevermind change 
the IP settings being used to create the shared connection.

Peter