diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c
index d64fdfa5ba..5507f9d3fd 100644
--- a/cmd/zpool/zpool_main.c
+++ b/cmd/zpool/zpool_main.c
@@ -3122,12 +3122,21 @@ zfs_force_import_required(nvlist_t *config)
 	nvlist_t *nvinfo;
 
 	state = fnvlist_lookup_uint64(config, ZPOOL_CONFIG_POOL_STATE);
-	(void) nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid);
+	nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO);
+
+	/*
+	 * The hostid on LOAD_INFO comes from the MOS label via
+	 * spa_tryimport(). If its not there then we're likely talking to an
+	 * older kernel, so use the top one, which will be from the label
+	 * discovered in zpool_find_import(), or if a cachefile is in use, the
+	 * local hostid.
+	 */
+	if (nvlist_lookup_uint64(nvinfo, ZPOOL_CONFIG_HOSTID, &hostid) != 0)
+		nvlist_lookup_uint64(config, ZPOOL_CONFIG_HOSTID, &hostid);
 
 	if (state != POOL_STATE_EXPORTED && hostid != get_system_hostid())
 		return (B_TRUE);
 
-	nvinfo = fnvlist_lookup_nvlist(config, ZPOOL_CONFIG_LOAD_INFO);
 	if (nvlist_exists(nvinfo, ZPOOL_CONFIG_MMP_STATE)) {
 		mmp_state_t mmp_state = fnvlist_lookup_uint64(nvinfo,
 		    ZPOOL_CONFIG_MMP_STATE);
@@ -3198,7 +3207,10 @@ do_import(nvlist_t *config, const char *newname, const char *mntopts,
 			time_t timestamp = 0;
 			uint64_t hostid = 0;
 
-			if (nvlist_exists(config, ZPOOL_CONFIG_HOSTNAME))
+			if (nvlist_exists(nvinfo, ZPOOL_CONFIG_HOSTNAME))
+				hostname = fnvlist_lookup_string(nvinfo,
+				    ZPOOL_CONFIG_HOSTNAME);
+			else if (nvlist_exists(config, ZPOOL_CONFIG_HOSTNAME))
 				hostname = fnvlist_lookup_string(config,
 				    ZPOOL_CONFIG_HOSTNAME);
 
@@ -3206,7 +3218,10 @@ do_import(nvlist_t *config, const char *newname, const char *mntopts,
 				timestamp = fnvlist_lookup_uint64(config,
 				    ZPOOL_CONFIG_TIMESTAMP);
 
-			if (nvlist_exists(config, ZPOOL_CONFIG_HOSTID))
+			if (nvlist_exists(nvinfo, ZPOOL_CONFIG_HOSTID))
+				hostid = fnvlist_lookup_uint64(nvinfo,
+				    ZPOOL_CONFIG_HOSTID);
+			else if (nvlist_exists(config, ZPOOL_CONFIG_HOSTID))
 				hostid = fnvlist_lookup_uint64(config,
 				    ZPOOL_CONFIG_HOSTID);
 
diff --git a/module/zfs/spa.c b/module/zfs/spa.c
index 413150fd22..0b69568e2a 100644
--- a/module/zfs/spa.c
+++ b/module/zfs/spa.c
@@ -3933,6 +3933,24 @@ spa_ld_trusted_config(spa_t *spa, spa_import_type_t type,
 	rvd = mrvd;
 	spa_config_exit(spa, SCL_ALL, FTAG);
 
+	/*
+	 * If 'zpool import' used a cached config, then the on-disk hostid and
+	 * hostname may be different to the cached config in ways that should
+	 * prevent import.  Userspace can't discover this without a scan, but
+	 * we know, so we add these values to LOAD_INFO so the caller can know
+	 * the difference.
+	 *
+	 * Note that we have to do this before the config is regenerated,
+	 * because the new config will have the hostid and hostname for this
+	 * host, in readiness for import.
+	 */
+	if (nvlist_exists(mos_config, ZPOOL_CONFIG_HOSTID))
+		fnvlist_add_uint64(spa->spa_load_info, ZPOOL_CONFIG_HOSTID,
+		    fnvlist_lookup_uint64(mos_config, ZPOOL_CONFIG_HOSTID));
+	if (nvlist_exists(mos_config, ZPOOL_CONFIG_HOSTNAME))
+		fnvlist_add_string(spa->spa_load_info, ZPOOL_CONFIG_HOSTNAME,
+		    fnvlist_lookup_string(mos_config, ZPOOL_CONFIG_HOSTNAME));
+
 	/*
 	 * We will use spa_config if we decide to reload the spa or if spa_load
 	 * fails and we rewind. We must thus regenerate the config using the
diff --git a/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import_hostid_changed_cachefile_unclean_export.ksh b/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import_hostid_changed_cachefile_unclean_export.ksh
index 8362d915f0..dcb1ac1ab6 100755
--- a/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import_hostid_changed_cachefile_unclean_export.ksh
+++ b/tests/zfs-tests/tests/functional/cli_root/zpool_import/zpool_import_hostid_changed_cachefile_unclean_export.ksh
@@ -20,8 +20,8 @@
 
 #
 # DESCRIPTION:
-# A pool that wasn't cleanly exported should be importable from a cachefile
-# without force even if the local hostid doesn't match the on-disk hostid.
+# A pool that wasn't cleanly exported should not be importable from a cachefile
+# without force if the local hostid doesn't match the on-disk hostid.
 #
 # STRATEGY:
 #	1. Set a hostid.
@@ -32,8 +32,9 @@
 #	4.2. Export the pool.
 #	4.3. Restore the device state from the copy.
 #	5. Change the hostid.
-#	6. Verify that importing the pool from the cachefile succeeds
-#	   without force.
+#	6. Verify that importing the pool from the cachefile fails.
+#	7. Verify that importing the pool from the cachefile with force
+#	   succeeds.
 #
 
 verify_runnable "global"
@@ -64,8 +65,11 @@ log_must rm -f $VDEV0.bak
 # 5. Change the hostid.
 log_must zgenhostid -f $HOSTID2
 
-# 6. Verify that importing the pool from the cachefile succeeds without force.
-log_must zpool import -c $CPATHBKP $TESTPOOL1
+# 6. Verify that importing the pool from the cachefile fails.
+log_mustnot zpool import -c $CPATHBKP $TESTPOOL1
 
-log_pass "zpool import can import pool from cachefile if not cleanly " \
-    "exported when hostid changes."
+# 7. Verify that importing the pool from the cachefile with force succeeds.
+log_must zpool import -f -c $CPATHBKP $TESTPOOL1
+
+log_pass "zpool import from cachefile requires force if not cleanly " \
+    "exported and hostid changes."