howto :add route to client

[DHCP-User Nick]

Guy Deleeuw wrote:
> Hello
>
> It is possible to add different route to dhcp clients ?
> like :
> route add -net 192.168.5.0 netmask 255.255.255.0 gw 192.168.3.198
>
> Regards
>
> Guy
>
>
Hi,

you can look for option classless-route code 249.
It's a dhcp option with code for windows.
But it's work for windows_XP and newer. Not for windows_2000!
Linux work fine of course.

dhcpd.conf example:


option classless-route code 249 = string;

host aaaa {
       ...............
       option classless-route 08:0a:0a:01:01:01;
}

---------------------------------
and howto get a strange parameter (perl example):

#!/bin/perl

$router_ip = '10.0.0.1';

#    10.0.0.0/8 - your network

print make_classless_option({"10.0.0.0/8" => "$router_ip"});

exit;

sub make_classless_option
{
    my $routes = shift;
    my ($s1, $s2, $s3, $s4, $len, @bytes, $net, $mask, $destination, 
$router);

    $len = 2;
    @bytes = ();
    foreach $destination(keys %{$routes}) {
        ($net, $mask) = split('/', $destination);
        $router = $routes->{$destination};
        ($s1, $s2, $s3, $s4) = split(/\./, $net);
        push(@bytes, sprintf('%02x', $mask));
        push(@bytes, sprintf('%02x', $s1));
        push(@bytes, sprintf('%02x', $s2)) if($mask > 8);
        push(@bytes, sprintf('%02x', $s3)) if($mask > 16);
        push(@bytes, sprintf('%02x', $s4)) if($mask > 24);
        ($s1, $s2, $s3, $s4) = split(/\./, $router);
        push(@bytes, sprintf('%02x', $s1));
        push(@bytes, sprintf('%02x', $s2));
        push(@bytes, sprintf('%02x', $s3));
        push(@bytes, sprintf('%02x', $s4));
    }

    return join(':', @bytes);
}


Good luck!
nick