Fix routes collector to be compatible with latest RouterOS release (#66)

* Fix routes collector to be compatible with latest RouterOS release

Tested on RouterOS 6.46.1

* remove ipv6 pool collector

collector/routes_collector.go

@@ -40,12 +40,7 @@ func (c *routesCollector) collect(ctx *collectorContext) error {
 		return err
 	}
 
-	err = c.colllectForIPVersion("6", "ipv6", ctx)
-	if err != nil {
-		return err
-	}
-
-	return nil
+	return c.colllectForIPVersion("6", "ip", ctx)
 }
 
 func (c *routesCollector) colllectForIPVersion(ipVersion, topic string, ctx *collectorContext) error {
@@ -70,6 +65,7 @@ func (c *routesCollector) colllectCount(ipVersion, topic string, ctx *collectorC
 		log.WithFields(log.Fields{
 			"ip_version": ipVersion,
 			"device":     ctx.device.Name,
+			"topic":      topic,
 			"error":      err,
 		}).Error("error fetching routes metrics")
 		return err