IPPROTO_IP(2const) and IPPROTO_IPV6(2const) first appeared in
POSIX.1-2001.[1]
[1] IEEE Std 1003.1-2001, Volume 1, Chapter 13 "Headers", p. 280.
<https://pubs.opengroup.org/onlinepubs/
009604499/basedefs/netinet/in.h.html>
Signed-off-by: Seth McDonald <sethmcmail@pm.me>
Message-ID: <
355603eae66595c24a2edee87d8d51b7c1ebfb7f.
1767599119.git.sethmcmail@pm.me>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
.\" .SH STANDARDS
.\" IP_XFRM_POLICY is Linux-specific
.\" IP_IPSEC_POLICY is a nonstandard extension, also present on some BSDs
+.SH HISTORY
+.TP
+.B IPPROTO_IP
+POSIX.1-2001.
.SH SEE ALSO
.BR setsockopt (2),
.BR ip (7)
.B ENOPROTOOPT
.I opt
is invalid.
+.SH HISTORY
+.TP
+.B IPPROTO_IPV6
+POSIX.1-2001.
.SH SEE ALSO
.BR setsockopt (2),
.BR cmsg (3),