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-rw-r--r--src/dhcp-manager/tests/test-dhcp-utils.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/dhcp-manager/tests/test-dhcp-utils.c b/src/dhcp-manager/tests/test-dhcp-utils.c
index 162f2dd4..f477c061 100644
--- a/src/dhcp-manager/tests/test-dhcp-utils.c
+++ b/src/dhcp-manager/tests/test-dhcp-utils.c
@@ -208,6 +208,8 @@ ip4_test_route (NMIP4Config *ip4_config,
 	const NMPlatformIP4Route *route;
 	guint32 tmp;
 
+	g_assert (expected_prefix <= 32);
+
 	route = nm_ip4_config_get_route (ip4_config, route_num);
 	g_assert (inet_pton (AF_INET, expected_dest, &tmp) > 0);
 	g_assert (route->network == tmp);