Discovery issue

[martin.pilote () videotron com]

Hello,

I searched over the web and i was not able to find out what is wrong with 
nmap. 
I'm doing vulnerability scan with nessus but before i'm using nmap to 
check wich IP is alive. 

Soo before Mars 2013, i was using nmap with -sn, --reason and results was 
pretty fine. 
After updated from version 5.5 to 6.4, almost all the IP is not considered 
as UP. 

I've tested yesteday with version 5.5 and 6.4 for 6300 IP : 
5.5 = 132 are UP 
6.4 = 1648 are UP

When i check into the result, a lot of them seem to be caused by a reset 
and most of them dont have any open or filtered port.

Any one have a clue ?

Martin
_______________________________________________
Sent through the dev mailing list
http://nmap.org/mailman/listinfo/dev
Archived at http://seclists.org/nmap-dev/