[ -n "$extport" ] || return
epmin="${extport%[-:]*}"; epmax="${extport#*[-:]}"
- [ "$epmin" != "$epmax" ] || epmax=""
+ [ "${epmin#!}" != "$epmax" ] || epmax=""
local ipmin ipmax intport
config_get intport "$cfg" dest_port "$extport"
ipmin="${intport%[-:]*}"; ipmax="${intport#*[-:]}"
- [ "$ipmin" != "$ipmax" ] || ipmax=""
+ [ "${ipmin#!}" != "$ipmax" ] || ipmax=""
local exthost
config_get exthost "$cfg" src_dip "$wanip"