iptables-translate -A OUTPUT -j CLASSIFY --set-class 0:0
nft 'add rule ip filter OUTPUT counter meta priority set none'

iptables-translate -A OUTPUT -j CLASSIFY --set-class ffff:ffff
nft 'add rule ip filter OUTPUT counter meta priority set root'

iptables-translate -A OUTPUT -j CLASSIFY --set-class 1:234
nft 'add rule ip filter OUTPUT counter meta priority set 1:234'