diff -u a/configure.ac b/configure.ac
--- a/configure.ac	2018-10-16 20:01:20.000000000 -0400
+++ b/configure.ac	2018-12-06 04:08:42.718993760 -0500
@@ -5185,6 +5185,19 @@
 )
 
 
+# Set keydir
+AC_ARG_WITH([keydir],
+	[  --with-keydir=      Specify different path for storing keys],
+	[
+		if test -n "$withval" && test "x$withval" != "xno" && \
+			test "x${withval}" != "xyes"; then
+			KEYDIR=$withval
+		fi
+	]
+)
+AC_SUBST([KEYDIR])
+
+
 AC_MSG_CHECKING([if we need to convert IPv4 in IPv6-mapped addresses])
 IPV4_IN6_HACK_MSG="no"
 AC_ARG_WITH(4in6,
@@ -5565,6 +5578,7 @@
 H=`eval echo ${PRIVSEP_PATH}` ; H=`eval echo ${H}`
 I=`eval echo ${user_path}` ; I=`eval echo ${I}`
 J=`eval echo ${superuser_path}` ; J=`eval echo ${J}`
+K=`eval echo ${KEYDIR}` ; K=`eval echo ${K}`
 
 echo ""
 echo "OpenSSH has been configured with the following options:"
@@ -5588,6 +5602,9 @@
 if test ! -z "$superuser_path" ; then
 echo "          sshd superuser user PATH: $J"
 fi
+if test ! -z "$KEYDIR" ; then
+echo "                       sshd keydir: $K"
+fi
 echo "                    Manpage format: $MANTYPE"
 echo "                       PAM support: $PAM_MSG"
 echo "                   OSF SIA support: $SIA_MSG"
Common subdirectories: a/contrib and b/contrib
diff -u a/Makefile.in b/Makefile.in
--- a/Makefile.in	2018-10-16 20:01:20.000000000 -0400
+++ b/Makefile.in	2018-12-06 04:00:04.301968236 -0500
@@ -32,8 +32,10 @@
 STRIP_OPT=@STRIP_OPT@
 TEST_SHELL=@TEST_SHELL@
 BUILDDIR=@abs_top_builddir@
+KEYDIR=@KEYDIR@
 
 PATHS= -DSSHDIR=\"$(sysconfdir)\" \
+	-DKEYDIR=\"$(KEYDIR)\" \
 	-D_PATH_SSH_PROGRAM=\"$(SSH_PROGRAM)\" \
 	-D_PATH_SSH_ASKPASS_DEFAULT=\"$(ASKPASS_PROGRAM)\" \
 	-D_PATH_SFTP_SERVER=\"$(SFTP_SERVER)\" \
@@ -168,11 +170,11 @@
 	-e 's|/etc/ssh/sshd_config|$(sysconfdir)/sshd_config|g' \
 	-e 's|/usr/libexec|$(libexecdir)|g' \
 	-e 's|/etc/shosts.equiv|$(sysconfdir)/shosts.equiv|g' \
-	-e 's|/etc/ssh/ssh_host_key|$(sysconfdir)/ssh_host_key|g' \
-	-e 's|/etc/ssh/ssh_host_ecdsa_key|$(sysconfdir)/ssh_host_ecdsa_key|g' \
-	-e 's|/etc/ssh/ssh_host_dsa_key|$(sysconfdir)/ssh_host_dsa_key|g' \
-	-e 's|/etc/ssh/ssh_host_rsa_key|$(sysconfdir)/ssh_host_rsa_key|g' \
-	-e 's|/etc/ssh/ssh_host_ed25519_key|$(sysconfdir)/ssh_host_ed25519_key|g' \
+	-e 's|/etc/ssh/ssh_host_key|$(KEYDIR)/ssh_host_key|g' \
+	-e 's|/etc/ssh/ssh_host_ecdsa_key|$(KEYDIR)/ssh_host_ecdsa_key|g' \
+	-e 's|/etc/ssh/ssh_host_dsa_key|$(KEYDIR)/ssh_host_dsa_key|g' \
+	-e 's|/etc/ssh/ssh_host_rsa_key|$(KEYDIR)/ssh_host_rsa_key|g' \
+	-e 's|/etc/ssh/ssh_host_ed25519_key|$(KEYDIR)/ssh_host_ed25519_key|g' \
 	-e 's|/var/run/sshd.pid|$(piddir)/sshd.pid|g' \
 	-e 's|/etc/moduli|$(sysconfdir)/moduli|g' \
 	-e 's|/etc/ssh/moduli|$(sysconfdir)/moduli|g' \
Common subdirectories: a/openbsd-compat and b/openbsd-compat
diff -u a/pathnames.h b/pathnames.h
--- a/pathnames.h	2018-10-16 20:01:20.000000000 -0400
+++ b/pathnames.h	2018-12-06 04:15:01.286012398 -0500
@@ -18,6 +18,10 @@
 #define SSHDIR				ETCDIR "/ssh"
 #endif
 
+#ifndef KEYDIR
+#define KEYDIR				SSHDIR
+#endif
+
 #ifndef _PATH_SSH_PIDDIR
 #define _PATH_SSH_PIDDIR		"/var/run"
 #endif
@@ -26,9 +30,9 @@
  * System-wide file containing host keys of known hosts.  This file should be
  * world-readable.
  */
-#define _PATH_SSH_SYSTEM_HOSTFILE	SSHDIR "/ssh_known_hosts"
+#define _PATH_SSH_SYSTEM_HOSTFILE	KEYDIR "/ssh_known_hosts"
 /* backward compat for protocol 2 */
-#define _PATH_SSH_SYSTEM_HOSTFILE2	SSHDIR "/ssh_known_hosts2"
+#define _PATH_SSH_SYSTEM_HOSTFILE2	KEYDIR "/ssh_known_hosts2"
 
 /*
  * Of these, ssh_host_key must be readable only by root, whereas ssh_config
@@ -36,12 +40,12 @@
  */
 #define _PATH_SERVER_CONFIG_FILE	SSHDIR "/sshd_config"
 #define _PATH_HOST_CONFIG_FILE		SSHDIR "/ssh_config"
-#define _PATH_HOST_DSA_KEY_FILE		SSHDIR "/ssh_host_dsa_key"
-#define _PATH_HOST_ECDSA_KEY_FILE	SSHDIR "/ssh_host_ecdsa_key"
-#define _PATH_HOST_ED25519_KEY_FILE	SSHDIR "/ssh_host_ed25519_key"
-#define _PATH_HOST_XMSS_KEY_FILE	SSHDIR "/ssh_host_xmss_key"
-#define _PATH_HOST_RSA_KEY_FILE		SSHDIR "/ssh_host_rsa_key"
-#define _PATH_DH_MODULI			SSHDIR "/moduli"
+#define _PATH_HOST_DSA_KEY_FILE		KEYDIR "/ssh_host_dsa_key"
+#define _PATH_HOST_ECDSA_KEY_FILE	KEYDIR "/ssh_host_ecdsa_key"
+#define _PATH_HOST_ED25519_KEY_FILE	KEYDIR "/ssh_host_ed25519_key"
+#define _PATH_HOST_XMSS_KEY_FILE	KEYDIR "/ssh_host_xmss_key"
+#define _PATH_HOST_RSA_KEY_FILE		KEYDIR "/ssh_host_rsa_key"
+#define _PATH_DH_MODULI			KEYDIR "/moduli"
 
 #ifndef _PATH_SSH_PROGRAM
 #define _PATH_SSH_PROGRAM		"/usr/bin/ssh"