Dear huitema, I read your presentation at IPv6 Forum. You said that RSIP is good for IPv6 evolution. I can't find the difference between NAT/NAPT and RSIP conceptually. Will you explain about it? Is RSIP good for ISP? Thank you. Sahng-Beom Kim -- Kim, Sahng-Beom / Korea Telecom TEL : +82-42-870-8322 FAX : +82-42-870-8329 E-mail : ksbn@kt.co.kr --