problem with nmap

[m@kh@ck3r]

Hi guys, I am having problems with nmap on osx. I use nmap on kali almost daily, and it works fine, but every time I run a scan from the osx side, I receive results showing all hosts are up and the same exact ports open on every box. I emptied the arp cache, turned off the firewall, stopped av, and I still get these results. Also, if I NAT kali, I get these erroneous results, but if I bridge it, everything works fine. Here is an example of the output:

Nmap scan report for 192.168.1.250
Host is up (0.0079s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap scan report for 192.168.1.251
Host is up (0.0060s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap scan report for 192.168.1.252
Host is up (0.0069s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap scan report for 192.168.1.253
Host is up (0.0071s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap scan report for 192.168.1.254
Host is up (0.0060s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap scan report for 192.168.1.255
Host is up (0.0035s latency).
Not shown: 993 filtered ports
PORT STATE SERVICE
80/tcp open http
110/tcp open pop3
143/tcp open imap
993/tcp open imaps
995/tcp open pop3s
3128/tcp open squid-http
8080/tcp open http-proxy

Nmap done: 256 IP addresses (256 hosts up) scanned in 85.00 seconds


There are only 3 boxes on this subnet, and none of them are running these services.