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

# without arguments
udp dport 53 redirect ;ok

# nf_nat flags combination
udp dport 53 redirect random ;ok
udp dport 53 redirect random,persistent ;ok
udp dport 53 redirect random,persistent,random-fully ;ok ;udp dport 53 redirect random,random-fully,persistent
udp dport 53 redirect random,random-fully ;ok
udp dport 53 redirect random,random-fully,persistent ;ok
udp dport 53 redirect persistent ;ok
udp dport 53 redirect persistent,random ;ok ;udp dport 53 redirect random,persistent
udp dport 53 redirect persistent,random,random-fully ;ok ;udp dport 53 redirect random,random-fully,persistent
udp dport 53 redirect persistent,random-fully ;ok ;udp dport 53 redirect random-fully,persistent
udp dport 53 redirect persistent,random-fully,random;ok ;udp dport 53 redirect random,random-fully,persistent

# port specification
tcp dport 22 redirect :22 ;ok
udp dport 1234 redirect :4321 ;ok
ip daddr 172.16.0.1 udp dport 9998 redirect :6515 ;ok
tcp dport 39128 redirect :993 ;ok
redirect :1234 ;nok
redirect :12341111 ;nok

# invalid arguments
tcp dport 9128 redirect :993 random ;nok
tcp dport 9128 redirect :993 random-fully ;nok
tcp dport 9128 redirect persistent :123 ;nok
tcp dport 9128 redirect random,persistent :123 ;nok

# redirect is a terminal statement
tcp dport 22 redirect counter packets 0 bytes 0 accept ;nok
tcp sport 22 redirect accept ;nok
ip saddr 10.1.1.1 redirect drop ;nok

# redirect with sets
tcp dport {1,2,3,4,5,6,7,8,101,202,303,1001,2002,3003} redirect ;ok
ip daddr 10.0.0.0-10.2.3.4 udp dport 53 counter packets 0 bytes 0 redirect ;ok ;ip daddr >= 10.0.0.0 ip daddr <= 10.2.3.4 udp dport 53 counter packets 0 bytes 0 redirect
iifname eth0 ct state new,established tcp dport vmap {22 : drop, 222 : drop } redirect ;ok