> > "UDP Checksum: this field MUST be transmitted as 0 and ignored on > > receipt by the ETR. Note, even when the UDP checksum is > transmitted > > as 0 an intervening NAT device can recalculate the checksum and > > rewrite the UDP checksum field to non-zero. For performance > reasons, > > the ETR MUST ignore the checksum and MUST not do a checksum > > computation." > > I would expect a NAT that saw a zero value to not recalculate the > checksum. >
Fred, We found this not to be the case in our testing of LISP. Many commercial (netgear and linksys being two that come to mind) NATs do indeed recalculate the checksum regardless of its initial value. Regards, -Darrel -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
