Subject: [BEHAVE] NAT64: clarification on RST handling in V6 FIN RCV state

From: Dmitry Anipko <[email-masked]>
Date: Fri, 24 Feb 2012 00:21:24 +0000

Hello,

RFC 6146, section 3.5.2.2, says that in V6 FIN RCV state *any* packet other than V4 FIN must set the session lifetime to no less than TCP_EST=2hours.

If the V4 target sent RST in response to the translated V6 FIN, what is the reason to keep the NAT mapping alive for TCP_EST instead of TCP_TRANS?

Should the language "if a V4 FIN packet is received,... lifetime is set to TCP_TRANS" be changed to "if a V4 FIN or V4 RST packet is received,... lifetime is set to TCP_TRANS"?

-Dmitry