Subject: Using nmap
From: John Alberts <john.m.alberts@gmail.com>
Date: Thu, 18 Jun 2009 14:35:35 -0500

I'm having trouble using nmap in a centos 5.3 guest running on a
centos 5.3 host.

When I run nmap with pretty much any options, such as: nmap -v -sP x.x.x.x

I get the following message:
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2009-06-18 14:34 CDT
dnet: Failed to open device eth0
QUITTING!

Does anyone have any idea what I need to do to get nmap working?

Thanks

-- 
John Alberts