diff --git a/ChangeLog b/ChangeLog
index 2140b20c8..47e97438b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -13,6 +13,9 @@
    - markus@cvs.openbsd.org 2003/08/13 09:07:10
      [readconf.c ssh.c]
      socks4->socks, since with support both 4 and 5; dtucker@zip.com.au
+ - (dtucker) [configure.ac openbsd-compat/bsd-misc.c openbsd-compat/bsd-misc.h]
+   Add a tcsendbreak function for platforms that don't have one, based on the
+   one from OpenBSD.
 
 20030811
  - (dtucker) OpenBSD CVS Sync
@@ -831,4 +834,4 @@
  - Fix sshd BindAddress and -b options for systems using fake-getaddrinfo.
    Report from murple@murple.net, diagnosis from dtucker@zip.com.au
 
-$Id: ChangeLog,v 1.2892 2003/08/13 10:38:36 dtucker Exp $
+$Id: ChangeLog,v 1.2893 2003/08/13 10:48:07 dtucker Exp $
diff --git a/configure.ac b/configure.ac
index 68fa5c1f2..9644dcaf2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-# $Id: configure.ac,v 1.138 2003/08/02 12:24:49 dtucker Exp $
+# $Id: configure.ac,v 1.139 2003/08/13 10:48:07 dtucker Exp $
 
 AC_INIT
 AC_CONFIG_SRCDIR([ssh.c])
@@ -695,8 +695,8 @@ AC_CHECK_FUNCS(\
 	setdtablesize setegid setenv seteuid setgroups setlogin setpcred \
 	setproctitle setregid setresgid setresuid setreuid setrlimit \
 	setsid setvbuf sigaction sigvec snprintf socketpair strerror \
-	strlcat strlcpy strmode strnvis sysconf tcgetpgrp truncate utimes \
-	vhangup vsnprintf waitpid \
+	strlcat strlcpy strmode strnvis sysconf tcgetpgrp tcsendbreak \
+	truncate utimes vhangup vsnprintf waitpid \
 )
 
 AC_SEARCH_LIBS(nanosleep, rt posix4, AC_DEFINE(HAVE_NANOSLEEP))
diff --git a/openbsd-compat/bsd-misc.c b/openbsd-compat/bsd-misc.c
index da8f77046..d4c793724 100644
--- a/openbsd-compat/bsd-misc.c
+++ b/openbsd-compat/bsd-misc.c
@@ -25,7 +25,7 @@
 #include "includes.h"
 #include "xmalloc.h"
 
-RCSID("$Id: bsd-misc.c,v 1.16 2003/08/02 14:36:16 dtucker Exp $");
+RCSID("$Id: bsd-misc.c,v 1.17 2003/08/13 10:48:07 dtucker Exp $");
 
 /*
  * NB. duplicate __progname in case it is an alias for argv[0]
@@ -180,3 +180,23 @@ tcgetpgrp(int fd)
 }
 #endif /* HAVE_TCGETPGRP */
 
+#ifndef HAVE_TCSENDBREAK
+int
+tcsendbreak(int fd, int duration)
+{
+# if defined(TIOCSBRK) && defined(TIOCCBRK)
+	struct timeval sleepytime;
+
+	sleepytime.tv_sec = 0;
+	sleepytime.tv_usec = 400000;
+	if (ioctl(fd, TIOCSBRK, 0) == -1)
+		return (-1);
+	(void)select(0, 0, 0, 0, &sleepytime);
+	if (ioctl(fd, TIOCCBRK, 0) == -1)
+		return (-1);
+	return (0);
+# else
+	return -1;
+# endif
+}
+#endif /* HAVE_TCSENDBREAK */
diff --git a/openbsd-compat/bsd-misc.h b/openbsd-compat/bsd-misc.h
index 03a1f3af0..f2fbdc2e3 100644
--- a/openbsd-compat/bsd-misc.h
+++ b/openbsd-compat/bsd-misc.h
@@ -22,7 +22,7 @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-/* $Id: bsd-misc.h,v 1.9 2003/08/02 13:31:42 dtucker Exp $ */
+/* $Id: bsd-misc.h,v 1.10 2003/08/13 10:48:07 dtucker Exp $ */
 
 #ifndef _BSD_MISC_H
 #define _BSD_MISC_H
@@ -91,6 +91,10 @@ int nanosleep(const struct timespec *, struct timespec *);
 
 #ifndef HAVE_TCGETPGRP
 pid_t tcgetpgrp(int);
-#endif /* HAVE_TCGETPGRP */
+#endif
+
+#ifndef HAVE_TCSENDBREAK
+int tcsendbreak(int, int);
+#endif
 
 #endif /* _BSD_MISC_H */