fixes #1022 Support tcp6 link local addresses

1 files changed, 8 insertions, 0 deletions

diff --git a/docs/man/nng_sockaddr_in6.5.adoc b/docs/man/nng_sockaddr_in6.5.adoc
index 804056c5..8515ed25 100644
--- a/docs/man/nng_sockaddr_in6.5.adoc
+++ b/docs/man/nng_sockaddr_in6.5.adoc
@@ -27,6 +27,7 @@ typedef struct {
     uint16_t sa_family;
     uint16_t sa_port;
     uint8_t  sa_addr[16];
+    uint32_t sa_scope;
 } nng_sockaddr_in6;
 ----
 
@@ -54,6 +55,13 @@ The following structure members are present:
     This field holds the ((IP address))(((address, IPv6))) in
     network-byte order.
 
+`sa_scope`::
+    This is the scope, and is typically used with link local
+    addresses to identify a specific interface.  The details of
+    this are specific to the operating system.  This value is
+    presented identically to the underlying system's, including
+    any byte order considerations.
+
 TIP: The `sa_port` and `sa_addr` fields are in network-byte order to
 facilitate their use with system APIs such as `inet_ntop()`.
 Most platforms use some form of BSD-derived network API, which uses