mac-address

Pattern: 
'[0-9a-fA-F]{2}(:[0-9a-fA-F]{2}){5}'               

The mac-address type represents an IEEE 802 MAC address. The canonical representation uses lowercase characters. In the value set and its semantics, this type is equivalent to the MacAddress textual convention of the SMIv2.

Reference:

  • IEEE 802: IEEE Standard for Local and Metropolitan Area Networks: Overview and Architecture

  • RFC 2579: Textual Conventions for SMIv2