iptables-translate -t mangle -A PREROUTING -j CONNMARK --set-mark 0
nft add rule ip mangle PREROUTING counter ct mark set 0x0

iptables-translate -t mangle -A PREROUTING -j CONNMARK --set-mark 0x16
nft add rule ip mangle PREROUTING counter ct mark set 0x16

iptables-translate -t mangle -A PREROUTING -j CONNMARK --set-xmark 0x16/0x12
nft add rule ip mangle PREROUTING counter ct mark set ct mark xor 0x16 and 0xffffffed

iptables-translate -t mangle -A PREROUTING -j CONNMARK --and-mark 0x16
nft add rule ip mangle PREROUTING counter ct mark set ct mark and 0x16

iptables-translate -t mangle -A PREROUTING -j CONNMARK --or-mark 0x16
nft add rule ip mangle PREROUTING counter ct mark set ct mark or 0x16

iptables-translate -t mangle -A PREROUTING -j CONNMARK --save-mark
nft add rule ip mangle PREROUTING counter ct mark set mark

iptables-translate -t mangle -A PREROUTING -j CONNMARK --restore-mark
nft add rule ip mangle PREROUTING counter meta mark set ct mark