This commit fixes #84 and partially fixes #87

1) Implements a reiforcment in the checking of DCCP-Sync and DCCP-SyncAck packets

2) Partially implements the support to reprocss invalid-packets
Signed-off-by: Ivo Calado <txithihausen@gmail.com>
Signed-off-by: João Correia <lucaskm98@gmail.com>