No need to grab unique subnets (for remote links) from the DB when

running in "impotent" mode; just make them up.

tbsetup/ns2ir/sim.tcl.in

@@ -780,6 +780,13 @@ Simulator instproc get_subnet_remote {} {
     var_import ::GLOBALS::DB
     var_import ::GLOBALS::pid
     var_import ::GLOBALS::eid
+    var_import ::GLOBALS::impotent
+
+    # If we are running in impotent mode, then no need for unique subnets
+    if {$impotent == 1} {
+	set subnet [$self get_subnet]
+	return $subnet
+    }
 
     sql exec $DB "insert into ipsubnets values ('$pid','$eid', NULL)"
     sql endquery $DB