def use_edns(self, edns, ednsflags, payload):

        if edns is None:
            edns = -1
        self.edns = edns
        self.ednsflags = ednsflags
        self.payload = payload
Configure Edns.
dataset/ETHPy150Open catap/namebench/nb_third_party/dns/resolver.py/Resolver.use_edns