Write test with resolver returning malformed DNS message

tests.yaml

@@ -9,6 +9,7 @@ config:
       - "check: test related to the compliance option --check"
       - "forceIPv4: test using the option -4"
       - "forceIPv6: test using the option -6"
+      - "fail: mark test with a resolver currently failing our tests"
 
 tests:
     - exe: './homer.py'
@@ -495,6 +496,21 @@ tests:
       retcode: 1
       partstderr: 'Key error'
 
+    - exe: './homer.py'
+      name: '[dot][check][fail] Resolver returning a malformed DNS message'
+      markers:
+          - 'dot'
+          - 'check'
+          - 'fail'
+      args:
+          - '--dot'
+          - '--check'
+          - 'dns.digitale-gesellschaft.ch'
+          - 'framagit.org'
+      retcode: 1
+      partstderr: 'Received DNS message is malformed'
+      stdout: "KO\n"
+
 ################################################################################
 
      # check_dot