Greetings -
I've just resolved a problem and I can't understand why it happened in the
first place. Perhaps some of you can help.
Host A is Digital UNIX box running v3.2g. Host B is an Ultrix box running v4.3.
problem:
Host A routing tables (as displayed by netstat -r) showed some dynamic routes
through a gateway host (Host B) which was incorrect. Host A has the
following route and gate daemon flags in rc.config:
RWHOD="no"
ROUTED="no"
ROUTED_FLAGS=
ROUTER="no"
GATED="no"
GATED_FLAGS=
we use only static routes on Host A (/etc/routes does not list Host B by name
or IP number).
netstat -r on Host A showed:
Routing tables
Destination Gateway Flags Refs Use Interface
Netmasks:
Inet 255.255.255.0
Route Tree for Protocol Family 2:
default cisco_router UG 178 8511669 tu0
localhost localhost UH 26 177020204 lo0
BackboneLAN_IP BackboneGateway UG 0 10804 fta0
remotehost1 Host B UGHD 0 7389 tu0
... Host B UGHD ... ... tu0
remotehostn Host B UGHD 0 126 tu0
^^^^
hence all remote hosts listing Host B as their Gateway were inaccessible
from Host A.
Resolution:
Host A# route delete -host <remotehost>
But, Why did this happen in the first place? Could it be a nameserver entry
somewhere? Perhaps a misconfigured host BIND setup in the LANs of the
remotehosts? or perhaps some host thinking Host B was a nameserver?
I'm at a loss to explain this.
Any ideas?
Randy M. Hayman
haymanr_at_icefog.alaska.edu
Received on Mon Nov 18 1996 - 21:38:54 NZDT