'rule inet dscpclassify dscp_match meta l4proto { udp } th dport { 3478 }
th sport { 3478-3497, 16384-16387 } goto ct_set_ef' works with
'nft add', but not 'nft insert', the latter yields:
"BUG: unhandled op 4".
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
