MLDv2 Report (`mldv2_report`)

Layer: L3 (network)
Header: variable length
Notes: Multicast control protocols

Reached from

Lower layer	Selector	Value
`icmpv6`	`type`	143 (0x8f)

Fields

Field	Type	Default	Auto	Description
`reserved`	`uint(16)`	`0`
`num_records`	`uint(16)`		Number of items of `records`	Number of group records.
`records`	`list<struct>` — rest of the PDU	1 items		Group records (record type, aux data length, sources, multicast address).

`records`

Each item is a group of the fields below.

Field	Type	Default	Auto	Description
`record_type`	`enum(8)`	`4` (change_to_exclude)
`aux_data_len`	`uint(8)`	`0`
`num_sources`	`uint(16)`		Number of items of `sources`
`multicast_address`	`ipv6`	`ff05::1`
`sources`	`list<ipv6>` — `num_sources * 16` octets	`[]`
`aux_data`	`bytes` — `aux_data_len * 4` octets	`""`

`records` › `record_type`

Value	Name
1 (0x01)	`mode_is_include`
2 (0x02)	`mode_is_exclude`
3 (0x03)	`change_to_include`
4 (0x04)	`change_to_exclude`
5 (0x05)	`allow_new_sources`
6 (0x06)	`block_old_sources`

Sample templates

mldv2-report — templates/protocols/mcast/mldv2-report.wpg.yaml