Active DHCPv6 Leases, missing host names for Apple devices


I'm using dnsmasq + odhcpd and I cannot see the host names for dhcpv6 leases on Apple devices.
I think it's also affecting the flow offload module on these devices because in a speed test the upload speed starts from 0 and very slowly goes up to 3/4 of the expected upload speed.

Meanwhile a test speed on a Windows PC the upload instantly goes to the maximum speed and it reaches the same speed as the download which is the expected behaviour.

What should I configure so that I get host names for these Apple devices same as I get from the Windows PC? How can I identify the problem?

The server doesn't know what the client doesn't send.
See also: