One more stupid question (No route to host)

[Gerald Combs]

On Sun, 27 Apr 2003, Duane Attaway wrote:

> Do a "/sbin/route -n" to display the routing table.  Your target should be
> listed on 1) one of the destination addresses limited to its netmask for
> the specified interface or 2) a default route.
> 
> "No route to host" means "none of the above" could be chosen, because no 
> route was defined to get there.  There were no roads on the map to get 
> there.  The packets did not have a highway to make the journey.  No roads 
> were paved to get there.

On a LAN connection it can also mean "I don't have an ARP entry for that
machine."  You You might want to run "arp -an" to see if the destination
address is in your ARP table.  If it's not you might try running "netstat
-in" or "ifconfig eth<x>" to see if any errors are accumulating.  It could
be a bad NIC or a bad cable, or a case of autonegotiation gone awry.

> You can make a route manually if you want:
> 
> /sbin/route add -host target.host.org eth0
> 
> where target.host.org is the ipaddress of where you want to go and eth0
> would be the bus it will take.  Now you will have a route.  Your new
> highway will now exist, but if there are houses on that road to answer
> your knocks are another question.  You might then get to your destination
> or get a "destination unreachable" or "connection timed out" error...
> 
> --
> Programming C shells by the sea shore since 1994.
> http://dattaway.org    
> 
> 
>