diff --git a/[refs] b/[refs]
index 2425ee130925..f2f227a3aa18 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c30bc94758ae2a38a5eb31767c1985c0aae0950b
+refs/heads/master: 4b6cc7284ddc9a54910f111085ebf0143ef3f5bd
diff --git a/trunk/include/net/netlink.h b/trunk/include/net/netlink.h
index 98c185441bee..cb1f3504687f 100644
--- a/trunk/include/net/netlink.h
+++ b/trunk/include/net/netlink.h
@@ -192,8 +192,15 @@ enum {
  *    NLA_NUL_STRING       Maximum length of string (excluding NUL)
  *    NLA_FLAG             Unused
  *    NLA_BINARY           Maximum length of attribute payload
- *    NLA_NESTED_COMPAT    Exact length of structure payload
- *    All other            Exact length of attribute payload
+ *    NLA_NESTED           Don't use `len' field -- length verification is
+ *                         done by checking len of nested header (or empty)
+ *    NLA_NESTED_COMPAT    Minimum length of structure payload
+ *    NLA_U8, NLA_U16,
+ *    NLA_U32, NLA_U64,
+ *    NLA_MSECS            Leaving the length field zero will verify the
+ *                         given type fits, using it verifies minimum length
+ *                         just like "All other"
+ *    All other            Minimum length of attribute payload
  *
  * Example:
  * static const struct nla_policy my_policy[ATTR_MAX+1] = {