diff --git a/man7/netlink.7 b/man7/netlink.7
index 9993a5c96..a13987cac 100644
--- a/man7/netlink.7
+++ b/man7/netlink.7
@@ -533,7 +533,8 @@ And the last example is about reading netlink message.
 .in +4n
 .nf
 int len;
-char buf[8192];
+char buf[8192];     /* 8192 to avoid message truncation on
+                       platforms with page size > 4096 */
 struct iovec iov = { buf, sizeof(buf) };
 struct sockaddr_nl sa;
 struct msghdr msg;