A number of workarounds for that specific ethernet chip were commited after 6.3. It has some severe errata...
- dhclient cannot get a lease until next reboot kawashima_james
- Re: dhclient cannot get a lease until next rebo... Theo de Raadt
- Re: dhclient cannot get a lease until next ... kawashima_james
- Re: dhclient cannot get a lease until n... Sebastian Benoit
- Re: dhclient cannot get a lease until next ... Chris Bennett
