Nmap Development mailing list archives

Re: Failed to determine route


From: Jay Chandler <lists () sequestered net>
Date: Thu, 08 May 2008 17:16:05 -0700

Mike pattrick wrote:
Hey Jay,

what happens if you run:
  
nmap --iflist
    

  
jay@Singularity~$ nmap --iflist

Starting Nmap 4.62 ( http://nmap.org ) at 2008-05-08 17:15 PDT
Warning: Unable to open interface en1 -- skipping it.
Warning: Unable to open interface vmnet8 -- skipping it.
Warning: Unable to open interface vmnet1 -- skipping it.
************************INTERFACES************************
DEV (SHORT) IP/MASK     TYPE     UP MAC
lo0 (lo0)   127.0.0.1/8 loopback up

WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
WARNING: Unable to find appropriate interface for system route to 10.10.16.1
**************************ROUTES**************************
DST/MASK        DEV GATEWAY
10.10.16.101/32 lo0 127.0.0.1
127.0.0.1/32    lo0 127.0.0.1
127.0.0.0/0     lo0 127.0.0.1


you could also try something like:

  
nmap -e <interface> -vvv 192.168.1.1
    

to manually tell nmap which interface to route the packets on.
  

Strangely, I never had to do this before. Any idea what might have 
caused the shift?

-- 
Jay Chandler / KB1JWQ
Living Legend / Systems Exorcist
Today's Excuse: we're waiting for [the phone company] to fix that line


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