aiccu: aiccu (Automatic IPv6 Connectivity Client Utility) aiccu: aiccu: AICCU makes it easy for users to get IPv6 connectivity. After having aiccu: requested an account, tunnel and optionally a subnet, AICCU can be aiccu: used to automatically configure the tunnel. AICCU supports TIC (Tunnel aiccu: Information & Control protocol), which it uses for retrieving the aiccu: tunnel configuration information, AYIYA, which allows tunnels to be aiccu: created even behind firewalls and NAT's. aiccu: aiccu: aiccu: