Allow UDP server to receive datagrams from multiple socket pairs with -k

flag. Prompted by a question from dsp at 2f30 dot org, diff from Lazarom
Koromil with a few tweaks by me, many thanks.

ok mikeb@ nicm@ haesbaert@

1 files changed, 6 insertions, 2 deletions

diff --git a/src/usr.bin/nc/nc.1 b/src/usr.bin/nc/nc.1
index 75d1437580..232b6f5b6e 100644
--- a/src/usr.bin/nc/nc.1
+++ b/src/usr.bin/nc/nc.1
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: nc.1,v 1.60 2012/02/07 12:11:43 lum Exp $
+.\"     $OpenBSD: nc.1,v 1.61 2012/07/07 15:33:02 haesbaert Exp $
 .\"
 .\" Copyright (c) 1996 David Sacerdote
 .\" All rights reserved.
@@ -25,7 +25,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: February 7 2012 $
+.Dd $Mdocdate: July 7 2012 $
 .Dt NC 1
 .Os
 .Sh NAME
@@ -119,6 +119,10 @@ is completed.
 It is an error to use this option without the
 .Fl l
 option.
+When used together with the
+.Fl u
+option, the server socket is not connected and it can receive UDP datagrams from
+multiple hosts.
 .It Fl l
 Used to specify that
 .Nm