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'

iptables-translate -t mangle -A PREROUTING  -j CONNMARK --set-mark 0x23/0x42 --right-shift-mark 5
nft 'add rule ip mangle PREROUTING counter ct mark set ( ct mark xor 0x23 and 0xffffff9c ) >> 5'