Hello -
So I have two hosts, TC (tinycore) and RH (RHEL6). Both have two nics, each host on two same subnets, say "10." and "158."
Both TC and RH hosts have the same default gateway route to a "158..129" address, which both can ping.
On the RH host I can ping a "far off" host, call it hostX (..254.18 below), and when I traceroute hostX I get 6 or so hops through specific IP's, the gateway 158 host being the first.
[root@RH shared2]# traceroute 158.187.254.18
traceroute to 158.187.254.18 (158.187.254.18), 30 hops max, 60 byte packets
1 158.187.254.129 (158.187.254.129) 0.473 ms 0.640 ms 0.750 ms
2 158.187.216.1 (158.187.216.1) 0.422 ms 0.500 ms 0.524 ms
3 158.187.245.105 (158.187.245.105) 0.365 ms 0.448 ms 0.484 ms
4 158.187.245.110 (158.187.245.110) 0.363 ms 0.628 ms 0.675 ms
5 158.187.188.12 (158.187.188.12) 0.426 ms 0.544 ms 0.625 ms
6 158.187.254.18 (158.187.254.18) 0.319 ms 0.302 ms 0.290 ms
[root@RH shared2]#
On the TC host I can ping RH host, and gatewaye host, and many other "close" hosts that can also be pinged by the RH host.
However, the only way I can ping hostX (158.187.254.18 ) from the TC host is if I add a route for each and EVERY hopped-host (from RH traceroute run above) using the gateway host (158.187.254.129) as the gateway.
Am I doing something whacked here? (I don't have any ip table stuff configured on TC or RH hosts, and I don't have access to any of the other hosts as they are enterprise controlled.) I've used the IP for the TC host on other RH distros in our env and never had this problem, so I don't the network is doing anything to block this IP in particular...
Any help appreciated...
Thanks, Sean