HomePod Mini's sending IPv6 router advertisements on the network

There was another post about this in 2021, with no real answer, this is still occurring, here's an extract from a pcap:

Frame 14: 126 bytes on wire (1008 bits), 126 bytes captured (1008 bits)

Ethernet II, Src: Apple_9c:e0:eb (e0:2b:96:9c:e0:eb), Dst: IPv6mcast_01 (33:33:00:00:00:01)

Destination: IPv6mcast_01 (33:33:00:00:00:01)

Address: IPv6mcast_01 (33:33:00:00:00:01)

.... ..1. .... .... .... .... = LG bit: Locally administered address (this is NOT the

factory default)

.... ...1 .... .... .... .... = IG bit: Group address (multicast/broadcast)

Source: Apple_9c:e0:eb (e0:2b:96:9c:e0:eb)

Address: Apple_9c:e0:eb (e0:2b:96:9c:e0:eb)

.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)

.... ...0 .... .... .... .... = IG bit: Individual address (unicast)

Type: IPv6 (0x86dd)

Internet Protocol Version 6, Src: fe80::1c1c:8255:7255:4138, Dst: ff02::1

0110 .... = Version: 6

.... 0000 0000 .... .... .... .... .... = Traffic Class: 0x00 (DSCP: CS0, ECN: Not-ECT)

.... 1001 0000 1111 0000 0000 = Flow Label: 0x90f00

Payload Length: 72

Next Header: ICMPv6 (58)

Hop Limit: 255

Source Address: fe80::1c1c:8255:7255:4138

Destination Address: ff02::1

Internet Control Message Protocol v6

Type: Router Advertisement (134)

Code: 0

Checksum: 0xba59 [correct]

[Checksum Status: Good]

Cur hop limit: 0

Flags: 0x00, Prf (Default Router Preference): Medium

Router lifetime (s): 0

Reachable time (ms): 0

Retrans timer (ms): 0

ICMPv6 Option (Prefix information : fd84:2927:b444:b043:7c00::/64)

Why is this device broadcasting to the network is the router interface? How can I disable this?

Thanks