+ logger.debug(f'ARPER: {mac} => {ip}')
+ self.state[mac] = ip
+
+ def update_from_arp(self):
+ try:
+ output = exec_utils.cmd(
+ '/usr/sbin/arp -a',
+ timeout_seconds=10.0
+ )
+ except Exception as e:
+ logger.exception(e)
+ return
+ for line in output.split('\n'):
+ ip = string_utils.extract_ip_v4(line)
+ mac = string_utils.extract_mac_address(line)
+ if ip is not None and mac is not None and mac != 'UNKNOWN' and ip != 'UNKNOWN':
+ mac = mac.lower()
+ logger.debug(f'ARPER: {mac} => {ip}')