I do apologise, my first post was a mis-paste I realise and has included a rule from a previous NAT.
Here’s the rules I have:
set nat destination rule 230 description ‘Hairpin NAT for X on Y’
set nat destination rule 230 destination group network-group ‘v4-external-ip’
set nat destination rule 230 destination port ‘60000-60010’
set nat destination rule 230 inbound-interface name ‘eth1’
set nat destination rule 230 protocol ‘udp’
set nat destination rule 230 translation address ‘192.168.0.5’
set nat source rule 230 description ‘Hairpin NAT for X on Y’
set nat source rule 230 destination address ‘192.168.0.5’
set nat source rule 230 destination port ‘60000-60010’
set nat source rule 230 outbound-interface name ‘eth1’
set nat source rule 230 protocol ‘udp’
set nat source rule 230 source address ‘192.168.0.0/16’
set nat source rule 230 translation address ‘masquerade’
eth1 is my LAN interface.