Nmap error

I 'm getting following error when i run nmap for an ip .. what could be the reason for it ?

#nmap 10.22.67.18
Starting Nmap 4.68 ( Nmap - Free Security Scanner For Network Exploration & Security Audits. ) at 2009-07-06 19:07 UTC
Warning: Unable to open interface e1000g3301000 -- skipping it.
WARNING: Unable to find appropriate interface for system route to 10.22.64.1
WARNING: Unable to find appropriate interface for system route to 10.22.67.17
WARNING: Unable to find appropriate interface for system route to 10.22.67.17
nexthost: failed to determine route to 10.22.67.18
QUITTING!
#

# ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
e1000g3301000: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2
inet 10.22.67.17 netmask fffffc00 broadcast 10.22.67.255
ether 0:15:17:8e:d2:ea

What does this say:
# netstat -rn

netstat -nr

Routing Table: IPv4
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ---------- ---------
default 10.22.64.1 UG 1 6473
10.22.64.0 10.22.67.17 U 1 650 e1000g3301000
224.0.0.0 10.22.67.17 U 1 0 e1000g3301000
127.0.0.1 127.0.0.1 UH 48 1243248 lo0