:pre;type nat hook prerouting priority 0
*ip;test-ip4;pre

ct mark set jhash ip saddr . ip daddr mod 2 seed 0xdeadbeef;ok
dnat to jhash ip saddr mod 2 seed 0xdeadbeef map { 0 : 192.168.20.100, 1 : 192.168.30.100 };ok