Michio Honda - Software

AUTO_ASCONF is an SCTP functionality, which transmits ASCONF chunks that reconfigure the IP address in existing SCTP associations. This functionality supports applications can continue communication even when the IP address has been changed (e.g., due to migration to a different network segment).
This implementation also enables fasthandoff based on a new retransmission trigger, which retransmits packet without waiting for retransmission timeout when source address changes. This is just Linux implementation of the paper.
For enabling AUTO_ASCONF and the fast handover feature, please apply the patch below. Then you should find a new sysctl parameter, auto_asconf_enable. When you set this parameter to 1, AUTO_ASCONF and the fast handoff feature work.
[patch]