DNS resolution on local network

Hi,

A little while ago I installed a Debian server and called it "riwaka". It
is a bare bones install - only OpenSSH is installed onto it. I chose DHCP
for the network and it was assigned an IP of 10.1.1.13 on my LAN. It's
wired but it shares the same network space as wireless clients via my Orcon
Genius router.

I noticed on my Ubuntu laptop I could "ping riwaka" and I get a response
from it. On a Windows PC through it can't resolve "riwaka". Both the Ubuntu
and Windows PC's are DHCP-configured.

At first I figured that it was the router doing the name resolution as it
as the DNS server that is specified in the DHCP response but in the router
config it lists DHCP clients of which "riwaka" is notably absent:

10.1.1.2 name=android_b41ab12268964a9a
10.1.1.3 name=android-fafb23eb66e2912b
10.1.1.4 name=GuruBobs-iPod
10.1.1.5 name=android-5b740b7e8555ac05
10.1.1.7 name=toshtop
10.1.1.8 name=
10.1.1.6 name=Loopys-iPod
10.1.1.9 name=squee
10.1.1.10 name=SnOOpS-iPhone
10.1.1.12 name=OPOHOPC
10.1.1.15 name=PAVILION
10.1.1.19 name=hpbook
10.1.1.20 name=Opoho-PC

Presumably this is a list of DHCP clients that have been seen at some point
so they can be consistently given the same IP address.

Anyway - my question is - how come my Ubuntu machine can resolve "riwaka"
to 10.1.1.13?

Cheers,

- Bob -

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