[Dnsmasq-discuss] dnsmasq.lease file question

[Philippe Faure]

Hello,

I am running Dnsmasq version 2.2 on a Debian server version 3.1. The
Dnsmasq.lease file has the following information stored in it.

1177812457 00:15:e9:a8:e5:28 192.168.0.50 debian-host *
1177928854 00:15:e9:a8:e6:c5 192.168.0.57 carm 01:00:15:e9:a8:e6:c5
1177849379 00:03:2f:3a:f2:e9 192.168.0.54 phil 01:00:03:2f:3a:f2:e9

Why is it that the two windows' boxes have the hardware ID there, while the
linux (Ubuntu Feisty, running dhcpcd) only has a *?

Is there some setup that I have done properly? if so with the client or 
server?

Do I need to worry about it?

thank you

Philippe