async def _find(self, rpcmethod):
        log.info("crawling network with nearest: %s", str(tuple(self.nearest)))
        count = self.alpha
        if self.nearest.get_ids() == self.last_ids_crawled:
            count = len(self.nearest)
        self.last_ids_crawled = self.nearest.get_ids()
        dicts = {}
        for peer in self.nearest.get_uncontacted()[:count]:
            dicts[peer.id] = rpcmethod(peer, self.node)
            self.nearest.mark_contacted(peer)
        found = await gather_dict(dicts)
        return await self._nodes_found(found)