diff --git a/man7/ipv6.7 b/man7/ipv6.7
index 16c760bc3..4ce1ac07a 100644
--- a/man7/ipv6.7
+++ b/man7/ipv6.7
@@ -399,12 +399,10 @@ for that instead.
 .B SOL_ICMPV6
 and other
 .BR SOL_ *
-socket options are not portable
-variants of
+socket options are nonportable variants of
 .BR IPPROTO_ *.
-For more information, see
-.BR ip (7),
-glibc and kernel headers.
+See also
+.BR ip (7).
 .SH BUGS
 The IPv6 extended API as in RFC\ 2292 is currently only partly
 implemented;