How to find IP address of a machine on network?

[Charles Darwin]

On 16-Jan-09, at 4:20 PM, NoOp wrote:

> Nmap done: 256 IP addresses (6 hosts up) scanned in 2.741 seconds

-bash-3.2$ uname -v && time dns-sd -B _ssh._tcp .
Darwin Kernel Version 9.6.0: Mon Nov 24 17:37:00 PST 2008;  
root:xnu-1228.9.59~1/RELEASE_I386
Browsing for _ssh._tcp
Timestamp     A/R Flags if Domain                    Service  
Type              Instance Name
21:22:16.685  Add     2  1 local.                     
_ssh._tcp.                Ubermensch
^C

real	0m0.799s
user	0m0.001s
sys	0m0.002s

It seems to me using nmap "for what we are trying to do here" is like  
using an artillery shell to knock out a mosquito, don't you thinnk?