DDNS with host declarations

[Simon Hobson]

Jan Engelhardt wrote:

>class "xp" { match if binary-to-ascii(16, 8, ":", hardware) =
>"00:0C:29:93:C6:21"; }

You don't need the binay-ascii stuff in there :

class "xp" { match if hardware) = 01:00:0C:29:93:C6:21; }

should do. Note the leading 01, it's the hardware type for ethernet.

>subnet ... {
>   range 192.168.234.10 192.168.234.40;
>   pool { allow members of "xp"; range 192.168.222.41; }
>}
>
>The client always gets the IP address it used before (234.20) rather
>than picking up .41. Is this because of the unconditional range
>statement?

Yes, you need to deny the class from all other ranges, so if you have 
a few you'd end up with :

   pool { deny members of "xp1" ;
          deny members of "xp2" ;
          deny members of "xp3" ;
          deny members of "xp4" ;
          deny members of "xp5" ;
          range 192.168.234.10 192.168.234.40; }

   pool { allow members of "xp1"; range 192.168.222.41; }
   pool { allow members of "xp2"; range 192.168.222.42; }
   pool { allow members of "xp3"; range 192.168.222.43; }
   pool { allow members of "xp4"; range 192.168.222.44; }
   pool { allow members of "xp5"; range 192.168.222.45; }