+function interface.is_bridgeport(self)
+ return self.dev and self.dev.bridge and true or false
+end
+
+function interface.tx_bytes(self)
+ return self.dev and self.dev.stats
+ and self.dev.stats.tx_bytes or 0
+end
+
+function interface.rx_bytes(self)
+ return self.dev and self.dev.stats
+ and self.dev.stats.rx_bytes or 0
+end
+
+function interface.tx_packets(self)
+ return self.dev and self.dev.stats
+ and self.dev.stats.tx_packets or 0
+end
+
+function interface.rx_packets(self)
+ return self.dev and self.dev.stats
+ and self.dev.stats.rx_packets or 0
+end
+