Missing MFC of Silbersack/Klein IP id generation?

[sthaug at nethelp.no]

According to the comments for rev. 1.10 of netinet/ip_id.c, from

    http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/ip_id.c

this is to be MFCed after 2 weeks (i.e. 2 weeks after 6. February 2008).

And yet here we are in July 2009, and 7-STABLE shows no sign of this
version of the IP id generation code but instead has the version that
Amit Klein showed had problems,

http://www.trusteer.com/docs/OpenBSD_DNS_Cache_Poisoning_and_Multiple_OS_Predictable_IP_ID_Vulnerability.pdf

Is this a deliberate choice?

Steinar Haug, Nethelp consulting, sthaug at nethelp.no