diff --git a/contrib/atf/atf-c/tc.h b/contrib/atf/atf-c/tc.h
--- a/contrib/atf/atf-c/tc.h
+++ b/contrib/atf/atf-c/tc.h
@@ -106,6 +106,7 @@
     ATF_DEFS_ATTRIBUTE_FORMAT_PRINTF(1, 2);
 void atf_tc_pass(void)
     ATF_DEFS_ATTRIBUTE_NORETURN;
+void atf_tc_require_kld(const char *);
 void atf_tc_require_prog(const char *);
 void atf_tc_skip(const char *, ...)
     ATF_DEFS_ATTRIBUTE_FORMAT_PRINTF(1, 2)
diff --git a/contrib/atf/atf-c/tc.c b/contrib/atf/atf-c/tc.c
--- a/contrib/atf/atf-c/tc.c
+++ b/contrib/atf/atf-c/tc.c
@@ -31,6 +31,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <libutil.h>
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stdint.h>
@@ -103,6 +104,7 @@
 static void errno_test(struct context *, const char *, const size_t,
                        const int, const char *, const bool,
                        void (*)(struct context *, atf_dynstr_t *));
+static atf_error_t check_kld(struct context *, const char *);
 static atf_error_t check_prog_in_dir(const char *, void *);
 static atf_error_t check_prog(struct context *, const char *);
 
@@ -460,6 +462,19 @@
     }
 }
 
+static atf_error_t
+check_kld(struct context *ctx, const char *kld)
+{
+    if (!kld_isloaded(kld)) {
+        atf_dynstr_t reason;
+
+	format_reason_fmt(&reason, NULL, 0, "The required kld %s "
+	    "is not loaded", kld);
+	fail_requirement(ctx, &reason);
+    }
+    return atf_no_error();
+}
+
 struct prog_found_pair {
     const char *prog;
     bool found;
@@ -829,6 +844,7 @@
 static void _atf_tc_fail_requirement(struct context *, const char *,
     const size_t, const char *, va_list) ATF_DEFS_ATTRIBUTE_NORETURN;
 static void _atf_tc_pass(struct context *) ATF_DEFS_ATTRIBUTE_NORETURN;
+static void _atf_tc_require_kld(struct context *, const char *);
 static void _atf_tc_require_prog(struct context *, const char *);
 static void _atf_tc_skip(struct context *, const char *, va_list)
     ATF_DEFS_ATTRIBUTE_NORETURN;
@@ -908,6 +924,12 @@
     UNREACHABLE;
 }
 
+static void
+_atf_tc_require_kld(struct context *ctx, const char *kld)
+{
+    check_fatal_error(check_kld(ctx, kld));
+}
+
 static void
 _atf_tc_require_prog(struct context *ctx, const char *prog)
 {
@@ -1154,6 +1176,14 @@
     _atf_tc_pass(&Current);
 }
 
+void
+atf_tc_require_kld(const char *kld)
+{
+    PRE(Current.tc != NULL);
+
+    _atf_tc_require_kld(&Current, kld);
+}
+
 void
 atf_tc_require_prog(const char *prog)
 {
diff --git a/contrib/atf/atf-sh/libatf-sh.subr b/contrib/atf/atf-sh/libatf-sh.subr
--- a/contrib/atf/atf-sh/libatf-sh.subr
+++ b/contrib/atf/atf-sh/libatf-sh.subr
@@ -353,6 +353,18 @@
     esac
 }
 
+#
+# atf_require_kld kld
+#
+#   Checks that the given kernel module is loaded.  If it is not,
+#   automatically skips the test case with an appropriate message.
+#
+atf_require_kld()
+{
+    kldstat -q "${1}" || \
+        atf_skip "The required module ${1} is not loaded"
+}
+
 #
 # atf_set varname val1 [.. valN]
 #
diff --git a/contrib/kyua/engine/atf_list.cpp b/contrib/kyua/engine/atf_list.cpp
--- a/contrib/kyua/engine/atf_list.cpp
+++ b/contrib/kyua/engine/atf_list.cpp
@@ -129,6 +129,8 @@
                 mdbuilder.set_string("required_configs", value);
             } else if (name == "require.files") {
                 mdbuilder.set_string("required_files", value);
+            } else if (name == "require.klds") {
+                mdbuilder.set_string("required_modules", value);
             } else if (name == "require.machine") {
                 mdbuilder.set_string("allowed_platforms", value);
             } else if (name == "require.memory") {
diff --git a/contrib/kyua/engine/requirements.cpp b/contrib/kyua/engine/requirements.cpp
--- a/contrib/kyua/engine/requirements.cpp
+++ b/contrib/kyua/engine/requirements.cpp
@@ -41,6 +41,8 @@
 #include "utils/sanity.hpp"
 #include "utils/units.hpp"
 
+#include <libutil.h>
+
 namespace config = utils::config;
 namespace fs = utils::fs;
 namespace passwd = utils::passwd;
@@ -220,6 +222,24 @@
 }
 
 
+/// Checks if all required modules are loaded.
+///
+/// \param required_programs Set of modules.
+///
+/// \return Empty if the required modules are all loaded or an error
+/// message otherwise.
+static std::string
+check_required_modules(const model::strings_set& required_modules)
+{
+    for (model::strings_set::const_iterator iter = required_modules.begin();
+         iter != required_modules.end(); iter++) {
+	if (!kld_isloaded((*iter).c_str()))
+            return F("Required module '%s' not loaded") % *iter;
+    }
+    return "";
+}
+
+
 /// Checks if the current system has the specified amount of memory.
 ///
 /// \param required_memory Amount of required physical memory, or zero if not
@@ -312,6 +332,10 @@
     if (!reason.empty())
         return reason;
 
+    reason = check_required_modules(md.required_modules());
+    if (!reason.empty())
+        return reason;
+
     reason = check_required_memory(md.required_memory());
     if (!reason.empty())
         return reason;
diff --git a/contrib/kyua/model/metadata.hpp b/contrib/kyua/model/metadata.hpp
--- a/contrib/kyua/model/metadata.hpp
+++ b/contrib/kyua/model/metadata.hpp
@@ -76,6 +76,7 @@
     const utils::units::bytes& required_disk_space(void) const;
     const paths_set& required_files(void) const;
     const utils::units::bytes& required_memory(void) const;
+    const strings_set& required_modules(void) const;
     const paths_set& required_programs(void) const;
     const std::string& required_user(void) const;
     const utils::datetime::delta& timeout(void) const;
@@ -121,6 +122,7 @@
     metadata_builder& set_required_disk_space(const utils::units::bytes&);
     metadata_builder& set_required_files(const paths_set&);
     metadata_builder& set_required_memory(const utils::units::bytes&);
+    metadata_builder& set_required_modules(const strings_set&);
     metadata_builder& set_required_programs(const paths_set&);
     metadata_builder& set_required_user(const std::string&);
     metadata_builder& set_string(const std::string&, const std::string&);
diff --git a/contrib/kyua/model/metadata.cpp b/contrib/kyua/model/metadata.cpp
--- a/contrib/kyua/model/metadata.cpp
+++ b/contrib/kyua/model/metadata.cpp
@@ -256,6 +256,7 @@
     tree.define< bytes_node >("required_disk_space");
     tree.define< paths_set_node >("required_files");
     tree.define< bytes_node >("required_memory");
+    tree.define< config::strings_set_node >("required_modules");
     tree.define< paths_set_node >("required_programs");
     tree.define< user_node >("required_user");
     tree.define< delta_node >("timeout");
@@ -282,6 +283,7 @@
     tree.set< bytes_node >("required_disk_space", units::bytes(0));
     tree.set< paths_set_node >("required_files", model::paths_set());
     tree.set< bytes_node >("required_memory", units::bytes(0));
+    tree.set< config::strings_set_node >("required_modules", model::strings_set());
     tree.set< paths_set_node >("required_programs", model::paths_set());
     tree.set< user_node >("required_user", "");
     // TODO(jmmv): We shouldn't be setting a default timeout like this.  See
@@ -597,6 +599,20 @@
 }
 
 
+/// Returns the list of modules needed by the test.
+///
+/// \return Set of strings.
+const model::strings_set&
+model::metadata::required_modules(void) const
+{
+    if (_pimpl->props.is_set("required_modules")) {
+        return _pimpl->props.lookup< config::strings_set_node >("required_modules");
+    } else {
+	return get_defaults().lookup< config::strings_set_node >("required_modules");
+    }
+}
+
+
 /// Returns the list of programs needed by the test.
 ///
 /// \return Set of paths.
diff --git a/lib/atf/libatf-c/Makefile b/lib/atf/libatf-c/Makefile
--- a/lib/atf/libatf-c/Makefile
+++ b/lib/atf/libatf-c/Makefile
@@ -31,6 +31,7 @@
 LIB=		atf-c
 PRIVATELIB=	true
 SHLIB_MAJOR=	1
+LIBADD=		util
 
 ATF=		${SRCTOP}/contrib/atf
 .PATH:		${ATF}
diff --git a/tests/sys/fs/tarfs/tarfs_test.sh b/tests/sys/fs/tarfs/tarfs_test.sh
--- a/tests/sys/fs/tarfs/tarfs_test.sh
+++ b/tests/sys/fs/tarfs/tarfs_test.sh
@@ -48,7 +48,6 @@
 }
 
 tarfs_setup() {
-	kldload -n tarfs || atf_skip "This test requires tarfs and could not load it"
 	mkdir "${mnt}"
 }
 
@@ -60,6 +59,7 @@
 tarfs_basic_head() {
 	atf_set "descr" "Basic function test"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_basic_body() {
 	tarfs_setup
@@ -87,6 +87,7 @@
 tarfs_basic_gnu_head() {
 	atf_set "descr" "Basic function test using GNU tar"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "gtar"
 }
 tarfs_basic_gnu_body() {
@@ -101,6 +102,7 @@
 tarfs_notdir_device_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_notdir_device_body() {
 	tarfs_setup
@@ -121,6 +123,7 @@
 tarfs_notdir_device_gnu_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561 using GNU tar"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "gtar"
 }
 tarfs_notdir_device_gnu_body() {
@@ -135,6 +138,7 @@
 tarfs_notdir_dot_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_notdir_dot_body() {
 	tarfs_setup
@@ -155,6 +159,7 @@
 tarfs_notdir_dot_gnu_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561 using GNU tar"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "gtar"
 }
 tarfs_notdir_dot_gnu_body() {
@@ -169,6 +174,7 @@
 tarfs_notdir_dotdot_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_notdir_dotdot_body() {
 	tarfs_setup
@@ -189,6 +195,7 @@
 tarfs_notdir_dotdot_gnu_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561 using GNU tar"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "gtar"
 }
 tarfs_notdir_dotdot_gnu_body() {
@@ -203,6 +210,7 @@
 tarfs_notdir_file_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_notdir_file_body() {
 	tarfs_setup
@@ -223,6 +231,7 @@
 tarfs_notdir_file_gnu_head() {
 	atf_set "descr" "Regression test for PR 269519 and 269561 using GNU tar"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "gtar"
 }
 tarfs_notdir_file_gnu_body() {
@@ -237,6 +246,7 @@
 tarfs_emptylink_head() {
 	atf_set "descr" "Regression test for PR 277360: empty link target"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_emptylink_body() {
 	tarfs_setup
@@ -256,6 +266,7 @@
 tarfs_linktodir_head() {
 	atf_set "descr" "Regression test for PR 277360: link to directory"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_linktodir_body() {
 	tarfs_setup
@@ -276,6 +287,7 @@
 tarfs_linktononexistent_head() {
 	atf_set "descr" "Regression test for PR 277360: link to nonexistent target"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_linktononexistent_body() {
 	tarfs_setup
@@ -293,6 +305,7 @@
 tarfs_checksum_head() {
 	atf_set "descr" "Verify that the checksum covers header padding"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_checksum_body() {
 	tarfs_setup
@@ -313,6 +326,7 @@
 tarfs_long_names_head() {
 	atf_set "descr" "Verify that tarfs supports long file names"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_long_names_body() {
 	tarfs_setup
@@ -337,6 +351,7 @@
 tarfs_long_paths_head() {
 	atf_set "descr" "Verify that tarfs supports long paths"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 }
 tarfs_long_paths_body() {
 	tarfs_setup
@@ -361,6 +376,7 @@
 tarfs_git_archive_head() {
 	atf_set "descr" "Verify that tarfs supports archives created by git"
 	atf_set "require.user" "root"
+	atf_set "require.klds" "tarfs"
 	atf_set "require.progs" "git"
 }
 tarfs_git_archive_body() {
diff --git a/tests/sys/net/if_wg.sh b/tests/sys/net/if_wg.sh
--- a/tests/sys/net/if_wg.sh
+++ b/tests/sys/net/if_wg.sh
@@ -34,6 +34,7 @@
 {
 	atf_set descr 'Create a wg(4) tunnel over an epair and pass traffic between jails'
 	atf_set require.user root
+	atf_set require.klds if_wg
 }
 
 wg_basic_body()
@@ -41,8 +42,6 @@
 	local epair pri1 pri2 pub1 pub2 wg1 wg2
         local endpoint1 endpoint2 tunnel1 tunnel2
 
-	kldload -n if_wg || atf_skip "This test requires if_wg and could not load it"
-
 	pri1=$(wg genkey)
 	pri2=$(wg genkey)
 
@@ -97,6 +96,7 @@
 {
 	atf_set descr 'Create a wg(4) tunnel over an epair and pass traffic between jails with netmap'
 	atf_set require.user root
+	atf_set require.klds if_wg netmap
 }
 
 wg_basic_netmap_body()
@@ -105,9 +105,6 @@
         local endpoint1 endpoint2 tunnel1 tunnel2 tunnel3 tunnel4
 	local pid status
 
-	kldload -n if_wg || atf_skip "This test requires if_wg and could not load it"
-	kldload -n netmap || atf_skip "This test requires netmap and could not load it"
-
 	pri1=$(wg genkey)
 	pri2=$(wg genkey)
 
@@ -190,6 +187,7 @@
 {
 	atf_set descr 'Create a wg(4) interface with a shared pubkey between device and a peer'
 	atf_set require.user root
+	atf_set require.klds if_wg
 }
 
 wg_key_peerdev_shared_body()
@@ -197,8 +195,6 @@
 	local epair pri1 pub1 wg1
         local endpoint1 tunnel1
 
-	kldload -n if_wg || atf_skip "This test requires if_wg and could not load it"
-
 	pri1=$(wg genkey)
 
 	endpoint1=192.168.2.1
@@ -238,8 +234,6 @@
 	local epair pri1 pub1 pri2 wg1 wg2
         local endpoint1 tunnel1
 
-	kldload -n if_wg || atf_skip "This test requires if_wg and could not load it"
-
 	pri1=$(wg genkey)
 	pri2=$(wg genkey)
 
@@ -283,6 +277,7 @@
 {
 	atf_set descr 'Create a wg(4) tunnel without epairs and pass traffic between jails'
 	atf_set require.user root
+	atf_set require.klds if_wg
 }
 
 wg_vnet_parent_routing_body()
@@ -290,8 +285,6 @@
 	local pri1 pri2 pub1 pub2 wg1 wg2
         local tunnel1 tunnel2
 
-	kldload -n if_wg
-
 	pri1=$(wg genkey)
 	pri2=$(wg genkey)
 
diff --git a/usr.bin/kyua/Makefile b/usr.bin/kyua/Makefile
--- a/usr.bin/kyua/Makefile
+++ b/usr.bin/kyua/Makefile
@@ -13,7 +13,7 @@
 PACKAGE=	tests
 PROG_CXX=	kyua
 SRCS=		main.cpp
-LIBADD=		lutok sqlite3
+LIBADD=		lutok sqlite3 util
 
 MAN=		kyua-about.1 \
 		kyua-config.1 \