I need a clue - having a network problem

[Alan Jackson]

Well our power went away last night for several hours, and that's when
I discovered that I forgot to put my router/switch on the UPS - whoops!
So I couldn't rlog into one of my systems to shut it down. And that system
is causing me problems today. 

I can communicate on my LAN, no problem. My good system is earthman, the
sick puppy is starman.

I can ping the sick system from my good one (and vice versa)

[ajackson at earthman ajackson]$ ping starman
PING starman.oplnk.net (192.168.0.4): 56 octets data
64 octets from 192.168.0.4: icmp_seq=0 ttl=255 time=0.5 ms
64 octets from 192.168.0.4: icmp_seq=1 ttl=255 time=0.3 ms
64 octets from 192.168.0.4: icmp_seq=2 ttl=255 time=0.3 ms

--- starman.oplnk.net ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss

I can ping my ISP from my good system...

[ajackson at earthman ajackson]$ ping www.oplnk.net
PING www.oplnk.net (216.90.3.141): 56 octets data
64 octets from 216.90.3.141: icmp_seq=0 ttl=253 time=29.5 ms
64 octets from 216.90.3.141: icmp_seq=1 ttl=253 time=29.0 ms
64 octets from 216.90.3.141: icmp_seq=2 ttl=253 time=30.3 ms

--- www.oplnk.net ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max = 29.0/29.6/30.3 ms

But when I try to ping my ISP from my sick system...

[ajackson at starman ajackson]$ ping www.oplnk.net
PING www.oplnk.net (216.90.3.141): 56 data bytes
ping: sendto: Network is unreachable
ping: wrote www.oplnk.net 64 chars, ret=-1
ping: sendto: Network is unreachable
ping: wrote www.oplnk.net 64 chars, ret=-1
ping: sendto: Network is unreachable
ping: wrote www.oplnk.net 64 chars, ret=-1

--- www.oplnk.net ping statistics ---
3 packets transmitted, 0 packets received, 100% packet loss    

Now, it's able to get DNS, since it figured out the IP address of
the server I pinged. So what has broken - where do I need to look?


-- 
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| Alan K. Jackson            | To see a World in a Grain of Sand      |
| alan at ajackson.org          | And a Heaven in a Wild Flower,         |
| www.ajackson.org           | Hold Infinity in the palm of your hand |
| Houston, Texas             | And Eternity in an hour. - Blake       |
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