diff --git a/validation/test-cases/1-init/900-reset_configuration/description b/validation/test-cases/1-init/900-reset_configuration/description
new file mode 100644
index 0000000..2dd8667
--- /dev/null
+++ b/validation/test-cases/1-init/900-reset_configuration/description
@@ -0,0 +1 @@
+reset configuration to defaults
diff --git a/validation/test-cases/1-init/900-reset_configuration/input.curl b/validation/test-cases/1-init/900-reset_configuration/input.curl
new file mode 100644
index 0000000..457856a
--- /dev/null
+++ b/validation/test-cases/1-init/900-reset_configuration/input.curl
@@ -0,0 +1,5 @@
+url	https://_HOST_IP_DEFAULT_/cryptobox
+data	action=config_do
+data	language=de
+data	ip=_HOST_IP_DEFAULT_
+data	timeout=30
diff --git a/validation/test-cases/1-init/900-reset_configuration/output b/validation/test-cases/1-init/900-reset_configuration/output
new file mode 100644
index 0000000..fd263a9
--- /dev/null
+++ b/validation/test-cases/1-init/900-reset_configuration/output
@@ -0,0 +1,7 @@
+Data.Config.IP=_HOST_IP_DEFAULT_
+Data.Config.Language=de
+Data.Config.TimeOut=30
+Data.Status.Config=1
+Data.Status.InitRunning=0
+Data.Status.IP=_HOST_IP_DEFAULT_
+Data.Status.Mounted=0
diff --git a/validation/test-cases/3-config/110-config_invalid_ip/input.curl b/validation/test-cases/3-config/110-config_invalid_ip/input.curl
index 457856a..a645c1c 100644
--- a/validation/test-cases/3-config/110-config_invalid_ip/input.curl
+++ b/validation/test-cases/3-config/110-config_invalid_ip/input.curl
@@ -1,5 +1,5 @@
 url	https://_HOST_IP_DEFAULT_/cryptobox
 data	action=config_do
 data	language=de
-data	ip=_HOST_IP_DEFAULT_
+data	ip=102._HOST_IP_DEFAULT_
 data	timeout=30