type: txt
help: Source IP address, subnet, or range
val_help: ipv4; IP address to match
val_help: ipv4net; Subnet to match
val_help: ipv4range; IP range to match
val_help: !ipv4; Match everything except the specified address
val_help: !ipv4net; Match everything except the specified subnet
val_help: !ipv4range; Match everything except the specified range