[CUWiN] N00b Question

[David Young]

On Sun, Aug 12, 2007 at 10:54:56PM -0500, David Young wrote:
> On Fri, Aug 10, 2007 at 04:35:58PM -0500, Jef Green wrote:
> > ----- Original Message ----- 
> > From: "David Young" <dyoung at pobox.com>
> > To: "Jef Green" <jefg at onshore.com>
> > Cc: <cu-wireless at lists.cuwireless.net>; <ryant at onshore.com>; 
> > <stel at onshore.com>
> > Sent: Monday, August 06, 2007 11:48 AM
> > Subject: Re: [CUWiN] N00b Question
> > 
> > 
> > >On Mon, Aug 06, 2007 at 11:36:14AM -0500, Jef Green wrote:
> > >>Thanks for the reply, David.
> > >>
> > >>The other question I had was whether or not it is feasible to change the
> > >>private address subnets the radios will be using for user space/dhcp.  We
> > >>have a rather large set of private NAT'd subnets internally already, and
> > >>I'd like to have the CuWin radios conform if possible.  This way if we
> > >>wanted to use a common NAT router, their would be no overlap.  We tried
> > >>changing subnet declarations in the config files and even tried disabling
> > >>ethip in the interface config files, but the radios rebooted with no
> > >>address instead of the addresses we had declared.  Possibly their is an
> > >>easier solution for this as well.  It seems the software is designed to
> > >>automatically choose IPs/subnetting based on MACs of the radios, but I'd
> > >>like to know if I can control or disable this function (within reason).
> > >
> > >I have never set up a node that way, myself.  Give me some details about
> > >how you configured the node, and I will try to figure out what's gone
> > >wrong in the CUWiNware.
> > >
> > >Dave
> > >
> > >-- 
> > >David Young             OJC Technologies
> > >dyoung at ojctech.com      Urbana, IL * (217) 278-3933 ext 24
> > >
> > 
> > David,
> >    We finally got the desired IPs/design to stick after reboot.  We 
> > basically changed the ethip and wlanip to short scripts on each radio 
> > (currently two radios for testing).  The scripts return the desired IP info 
> > when called.  This seems an easier solution than bypassing ethip/wlanip 
> > alltogether.  The only problem we're having now is that packets headed for 
> > the gateway stop at radio1(core radio) and are not routed out.  You can 
> > ping all radio1 interface IPs from your laptop while associated to radio2, 
> > but no where beyond radio1.  If the same laptop associates w/ radio1, it 
> > gets out fine.  Looks like we're missing something here.  Attached is a 
> > network a simple design layout. I pasted copies of the replacement dummy 
> > scripts below.
> 
> BTW, the reason your desired IPs did not stick was that the files
> /etc/ifconfig.* do not use the configuration stored in /etc/cuw_config,
> but they use wlanip, et cetera, instead.  A template such as
> /etc/ifconfig.ap.tmpl ought to have lines like
> 
>         inet alias $(/sbin/get_config_val $int ipv4_address)
> 
> instead of 
> 
>         inet alias $(/sbin/ethip $int)
> 
> as it has, now.  I haven't made the change and tested it, myself.

I have made this change in the source, now.  I have not tested with a
custom config, but I don't see any regression with a default config.
See if you can set custom IPs and netmasks by adding to /etc/cuw_config,
for example,

if_ath0_ipv4_address=10.0.1.2
if_ath0_ipv4_netmask=255.255.0.0

Dave

-- 
David Young             OJC Technologies
dyoung at ojctech.com      Urbana, IL * (217) 278-3933 ext 24