Editing MAC address (section)

===Ranges of group and locally administered addresses===

The U/L and I/G bits are handled independently, and there are [[Multicast address#Ethernet|instances]] of all four possibilities.<ref name="IEEE Tutorial" /> [[IPv6#Multicasting|IPv6 multicast]] uses locally administered, multicast MAC addresses in the range {{MACaddr|3'''<u>3</u>'''-33-xx-xx-xx-xx}} (with both bits set).{{Ref RFC|7042|rsection=2.3.1}}

Given the locations of the U/L and I/G bits, they can be discerned in a single digit in common MAC address notation as shown in the following table:

{| class="wikitable"
|+ Universal/local and individual/group bits in MAC addresses
! {{diagonal split header|I/G|U/L}}
! Universally administered
! Locally administered
|-
! Unicast (individual)
|{{MACaddr|x'''<u>0</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>4</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>8</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>c</u>'''-xx-xx-xx-xx-xx}}
|{{MACaddr|x'''<u>2</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>6</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>a</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>e</u>'''-xx-xx-xx-xx-xx}}
|-
! Multicast (group)
|{{MACaddr|x'''<u>1</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>5</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>9</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>d</u>'''-xx-xx-xx-xx-xx}}
|{{MACaddr|x'''<u>3</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>7</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>b</u>'''-xx-xx-xx-xx-xx}}{{newline}}{{MACaddr|x'''<u>f</u>'''-xx-xx-xx-xx-xx}}
|}