iptables-translate -t nat -A POSTROUTING -j MASQUERADE
nft add rule ip nat POSTROUTING counter masquerade

iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade to :10

iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --to-ports 10-20 --random
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade to :10-20 random

iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --random
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade random

iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --random-fully
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade fully-random

iptables-translate -t nat -A POSTROUTING -p tcp -j MASQUERADE --random --random-fully
nft add rule ip nat POSTROUTING ip protocol tcp counter masquerade random,fully-random