+Bad messages:
+
+aar-bad.hex: comes from ../xml_examples/aar.xml
+ Consists in a deliberated bad length encoded on grouped Subscription-Id length field (not multiple of 4).
+
+aar2-bad.hex: comes from ../xml_examples/aar2.xml
+ Consists in a deliberated bad length encoded on enumerated Flow-Status avp 2-level nested inside Media-Component-Description:
+ -> Media-Component-Description (grouped)
+ -> Media-Sub-Component (grouped)
+ -> Flow-Status (enumerated)