IGMPv2 packet structure

Defined by RFC 2236

IGMPv2 packet structure

+ Bits 0–7 8–15 16–31

0 Type Max Resp Time Checksum

32 Group Address

Where:

Type is Membership Query (0x11), Membership Address (IGMPv1: 0x12, IGMPv2: 0x16), Leave Group (0x17) IGMPv3 adds blazon Membership Address (0x22)

Max Resp Time specifies the time absolute for the agnate report. The acreage has a resolution of 100 miliseconds, the amount is taken directly. This acreage is allusive alone in Membership Query (0x11); in added letters it is set to 0 and abandoned by the receiver.