strange internal ipv6 addresses in LAN network

[Saggittarius]

Hi all,

I had a look at the firewall logs and seeing a lot of entries like these ones? What are these ipv6 addresses?

Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:5353 [ff02::fb]:5353 UDP
Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:52005 [ff02::1:3]:5355 UDP
Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:5353 [ff02::fb]:5353 UDP
Feb 2 10:55:47 LAN Default deny rule IPv6 (1000000105) [fe80::aa23:feff:fed2:b70e]:5353 [ff02::fb]:5353 UDP

Thanks for your help.

Regards

[JKnott]

@saggittarius

Those are link local addresses. Every IPv6 capable device has them. Those starting with ff02 are multicast addresses, but those would be destinations, not sources. The link local addresses are often, but not always derived from the MAC address.

[NogBadTheBad]

@saggittarius said in strange internal ipv6 addresses in LAN network:

Hi all,

I had a look at the firewall logs and seeing a lot of entries like these ones? What are these ipv6 addresses?

Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:5353 [ff02::fb]:5353 UDP
Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:52005 [ff02::1:3]:5355 UDP
Feb 2 10:55:48 LAN Default deny rule IPv6 (1000000105) [fe80::d1b6:7c0f:e7ae:9df8]:5353 [ff02::fb]:5353 UDP
Feb 2 10:55:47 LAN Default deny rule IPv6 (1000000105) [fe80::aa23:feff:fed2:b70e]:5353 [ff02::fb]:5353 UDP

Thanks for your help.

Regards

IPv6 Multicast Link-Local Multicast Name Resolution for the 5355 entries and Multicast DNS for the 5353 entries.