Broken network alias/Weird netstat results

Question

After working fine for months, all of a sudden I can't connect to one particular system I have on my home network (it is a network attached storage device). The problem is only from one machine (I have 2 other Macs and they work fine). I also have other systems (including another identical storage device) that all still work fine. My network alias links for this device complain that they are broken. I can't connect regardless of the protocol I use -- SMB, FTP or HTTP. I can't even ping it as I get "no route to host".
I changed the IP address of the system to see if I could get around it that way -- no good. I checked the network tables (netstat -rn) and found that there are some curious entries for that device both before/after I changed its IP address:
192.168.1.10 127.0.0.1 UHS 0 0 lo0
192.168.1.15 link#4 UHLW 0 9 en0
These appear to be static routes stuck in the routing table that give erroneous routing information on how to travel to my storage device. Any idea how I get rid of these entries as, it seems, they are the key to solving the issues I'm seeing?

Answer 1

You can use the route command to manipulate your routing tables.
sudo route delete 192.168.0.10
Or you can flush them all with route flush but you'd better be prepared to add the default gateway back (e.g. sudo route add default 192.168.0.1).
But that's more informational than anything, 'cause I don't think that will solve your problem. Something's advertising those routes and they'll probably show right back up. Maybe I'm wrong, give it a try.