Wireshark · Ethereal-users: [Ethereal-users] why is this frame malformed?

["Stu Miller" <miller@xxxxxxxxxxx>]

Can anyone tell me why the following frame is considered
to be malformed by ethereal:

Frame 20 (78 on wire, 78 captured)
    Arrival Time: Apr  3, 2001 13:46:19.8175
    Time delta from previous packet: 0.000376 seconds
    Time relative to first packet: 2147.923719 seconds
    Frame Number: 20
    Packet Length: 78 bytes
    Capture Length: 78 bytes
Ethernet II
    Destination: 08:00:20:b9:0e:9d (08:00:20:b9:0e:9d)
    Source: 08:00:20:d8:f0:b1 (08:00:20:d8:f0:b1)
    Type: IP (0x0800)
Internet Protocol
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 64
    Identification: 0x7763
    Flags: 0x04
        .1.. = Don't fragment: Set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 255
    Protocol: SCTP (0x84)
    Header checksum: 0xa715 (correct)
    Source: larry (172.25.2.86)
    Destination: darlington (172.25.2.56)
Stream Control Transmission Protcol
    Source port: 9805
    Destination port: 3456
    Verification tag: 0x00000000
    Adler-32 checksum: 0x83a407a5 (correct)
    Incomplete chunk
        Identifier: 6 (ABORT)
        Flags: 0
        Length: 29
        BAD ERROR CAUSE
            Cause code: 8 (Unrecognized parameters)
            Cause length: 25
[Malformed Frame: SCTP]

   0  0800 20b9 0e9d 0800 20d8 f0b1 0800 4500   .. ..... .....E. 
  10  0040 7763 4000 ff84 a715 ac19 0256 ac19   .@wc@........V.. 
  20  0238 264d 0d80 0000 0000 83a4 07a5 0600   .8&M............ 
  30  001d 0008 0019 000b 0015 7468 756e 6465   ..........thunde 
  40  722e 6467 6d73 2e63 6f6d 0000 0000        r.dgms.com....   


Thank you,
Stu Miller
Ulticom, Inc
miller@xxxxxxxxxxx