In packet-smb2.h and packet-smb2.c the SMB2 MessageId is defined as a signed 
64-bit integer.

typedef struct _smb2_info_t {
               guint16 opcode;
               guint32 ioctl_function;
               guint32 status;
               guint32 tid;
               guint64 sesid;
               gint64  msg_id;
               guint32 flags;
               smb2_eo_file_info_t       *eo_file_info; /* eo_smb extra info */
               smb2_conv_info_t           *conv;
               smb2_saved_info_t         *saved;
               smb2_tid_info_t                              *tree;
               smb2_sesid_info_t           *session;
               smb2_fid_info_t                              *file;
               proto_tree *top_tree;
} smb2_info_t;

                              { &hf_smb2_msg_id,
                                             { "Message ID", "smb2.msg_id", 
                                             NULL, 0, "SMB2 Message ID", HFILL }

I believe MessageId should be an unsigned 64-bit integer.  Although the 
[MS-SMB2] document isn't specific, Microsoft Message Analyzer defines the field 
as UInt64.

It's not a big deal but it does mean that filtering for a range of MessageIds 
won't work as expected for very large values.

Is it OK for me to report this as a bug through Bugzilla?

Best regards...Paul


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