Value Required INTERFACE (\S+)
Value Required ADDRESS (\d+\.\d+\.\d+\.\d+)
Value Required AGE (\S+)
Value Required MAC (\S+)

Start
  ^\s*${INTERFACE}\s+${ADDRESS}\s+${MAC}\s+${AGE} -> Record
  # Capture time-stamp if vty line has command time-stamping turned on
  ^Load\s+for\s+
  ^Time\s+source\s+is
  ^\s*$$
  ^. -> Error
