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Applying IPsec in Hub&Spokes Scenario Softwire Host User ISP Network IPv6 SI (PPP/L2TPv2/UDP/IPv4) AAA ESP (transport mode) L2TPv2 and IPsec filter guidelines described in RFC3193 in case where the SC chooses a new IP address/port number: load-balancing Use RFC3193 IPsec filter details (section 4) SC and SI must have IPsec security policy filters pre-configured. |