пишем nmap 127.0.0.1
имеем
nmap 127.0.0.1
Starting nmap 3.50 ( http://www.insecure.org/nmap/ ) at 2004-08-08 16:11 EEST
WARNING: Could not determine what interface to route packets through to 127.0.0.1, changing ping scantype to ICMP ping only pcap_open_live: ioctl: No such device
There are several possible reasons for this, depending on your operating system:
LINUX: If you are getting Socket type not supported, try modprobe af_packet or recompile your kernel with SOCK_PACKET enabled.