Abstract. IPv6 network is a new phenomenon that provides technical benefits not only in addition to a larger addressing space but also takes advantage of device mobility, security, and configuration aspects. Nevertheless several threads of cyber-attacks, especially DDoS (Distributed Denial of Service) attacks, are still great challenge on security for networks based on IPv6. In this work, we present utilizing of a peer-to-peer (P2P) grid for building a laboratory testbed for experiments with DDoS attacks in IPv6, specifically for HTTP Get flood attack. Our platform is based on OurGrid environment and enables to run a pseudo-botnet on available nodes to use spreading, control, and attack techniques for testing of real network system. Our model allows researchers and network administrators a tools to help them understand and test the state of their networks and to examine countermeasures to such attacks. The paper aims to find out the internet protocol resistance in terms of DDoS attack and to compare outputs in IPv4/IPv6 networks.