How to analyze the specific differences between the two addresses 224.0.0.5 and 224.0.0.6 in OSPF

224.0.0.6 refers to the multicast receiving address of DR and BDR in a multi-access network,

224.0.0.5 refers to all interfaces running the OSPF process in any network belonging to this group, so Receive all multicast packets for 224.0.0.5.

Focus on understanding what kind of multicast packets belong to a certain group and what kind of multicast packets are received.
For example, DR/BDR belongs to the group (Group) with the multicast address 224.0.0.6, so it receives the destination address 224.0 .0.6 multicast packet, you can understand why multi-channel access can prevent excessive processing of information by setting DR/BDR (because the receivers belonging to a certain group (referring to the OSPF interface) will only be stripped to the second layer instead of It will be processed further, which saves a lot of waste of resources).

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