1 files changed, 17 insertions, 2 deletions
diff --git a/man7/unix.7 b/man7/unix.7
index e80a96748d..1591691a4f 100644
--- a/man7/unix.7
+++ b/man7/unix.7
@@ -101,7 +101,11 @@ a unique name in the abstract namespace will be generated automatically.
 Expects an integer boolean flag. 
 
 .SH "(UN)SUPPORTED FEATURES"
-On Linux, Unix domain sockets do not support the transmission of out-of-band data (the 
+The following paragraphs describe domain-specific details and 
+unsupported features of the sockets API for Unix domain sockets on Linux.
+
+Unix domain sockets do not support the transmission of 
+out-of-band data (the 
 .B MSG_OOB
 flag for
 .BR send (2)
@@ -109,10 +113,21 @@ and
 .BR recv (2)).
 
 The
-.BR sned (2)
+.BR send (2)
 .B MSG_MORE
 flag is not supported Unix domain sockets.
 
+The
+.B SO_SNDBUF
+socket does have an effect for Unix domain sockets, but the
+.B SO_RCVBUF
+option does not.
+For datagram sockets, the
+.B SO_SNDBUF
+value imposes an upper limit on the size of outgoing datagrams.
+This limit is calculated as the doubled (see
+.BR socket (7))
+option value less 32 bytes used for overhead.
 
 .SH "ANCILLARY MESSAGES"
 Ancillary data is sent and received using