[Bug 282074] IPv6 is brokon on Quartz64 (RK3566)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282074

            Bug ID: 282074
           Summary: IPv6 is brokon on Quartz64 (RK3566)
           Product: Base System
           Version: CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: arm
          Assignee: [email protected]
          Reporter: [email protected]

When configured with ACCEPT_RTADV, the eqos NIC in the RK3566 does not receive
packets addressed to 33:33:00:00:00:01 and therefore does not see NDP packets
needed to participate in IPv6.

Explicitly placing the NIC in promiscuous mode (e.g. using tcpdump) works.

Using mtest(8) to add and remove 33:33:00:00:00:01 shows that the address
appears to be configured in the NIC but packets addressed to that MAC aren't
getting passed into the kernel (not seen by tcpdump).

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