Hi all,
I have a small patch to add a comment to struct inpcb, explaining the
role of member "vflag" (IP version flag, v4/v6). It took me a while to
figure it out so I think it might be better to explicitly explain it.
If you are wondering when it has been introduced, here are the results
of my digging:
It has been introduced in the KAME tree kame-freebsd-30 tree, revision
1.12, 18 Nov 1998:
http://orange.kame.net/dev/cvsweb.cgi/src/sys/netinet/in_pcb.h?cvsroot=kame-freebsd-30
Then it has been merged in revision 1.30, 22 Nov 1999, in the FreeBSD
source tree:
http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/in_pcb.h
Marco
--- in_pcb.h.old Mon Feb 25 09:27:00 2002
+++ in_pcb.h Mon Feb 25 09:30:50 2002
@@ -141,7 +141,7 @@
int inp_flags; /* generic IP/datagram flags */
struct inpcbpolicy *inp_sp; /* for IPSEC */
- u_char inp_vflag;
+ u_char inp_vflag; /* IP version flag (v4/v6) */
#define INP_IPV4 0x1
#define INP_IPV6 0x2
u_char inp_ip_ttl; /* time to live proto */
