{ "rule": { "family" : "ip6", "table" : "nat", "chain"  : "output", "handle" : 33,"flags" : 0, "expr" : [ { "type" : "nat", "nat_type" : "snat", "family" : "ip6", "sreg_addr_min" : 1, "sreg_addr_max" : 2, "sreg_proto_min" : 3, "sreg_proto_max" : 4}]}}