diff --git a/net/inet/inet_sockif.c b/net/inet/inet_sockif.c
index 9ab4be7336..d9c56ad76d 100644
--- a/net/inet/inet_sockif.c
+++ b/net/inet/inet_sockif.c
@@ -286,6 +286,10 @@ static sockcaps_t inet_sockcaps(FAR struct socket *psock)
     {
 #ifdef NET_TCP_HAVE_STACK
       case SOCK_STREAM:
+        /* REVISIT:  Non-blocking recv() depends on CONFIG_NET_TCP_READAHEAD,
+         * but non-blocking send() depends on CONFIG_NET_TCP_WRITE_BUFFERS.
+         */
+
 #ifdef CONFIG_NET_TCP_READAHEAD
         return SOCKCAP_NONBLOCKING;
 #else
@@ -295,6 +299,10 @@ static sockcaps_t inet_sockcaps(FAR struct socket *psock)
 
 #ifdef NET_UDP_HAVE_STACK
       case SOCK_DGRAM:
+        /* REVISIT:  Non-blocking recvfrom() depends on CONFIG_NET_UDP_READAHEAD,
+         * but non-blocking sendto() depends on CONFIG_NET_UDP_WRITE_BUFFERS.
+         */
+
 #ifdef CONFIG_NET_UDP_READAHEAD
         return SOCKCAP_NONBLOCKING;
 #else