@classmethod
    def validate_rpc_ip(cls, ip):
        if not is_valid_ipv4(ip):
            raise ApplicationException(desc='Invalid rpc ip address.')
        return ip
Functionality testing of find_free_prefix
dataset/ETHPy150Open osrg/ryu/ryu/services/protocols/bgp/application.py/RyuBGPSpeaker.validate_rpc_ip--crossover with--dataset/ETHPy150Open SpriteLink/NIPAP/tests/nipapbase.py/NipapTest.test_find_free_prefix2