linux - DHCP Option 77 - malformed option -

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i'am developing industrial application based on open source dhcp client.

i setting custom dhcp client class id (dhcp option 77)

ipconfig /setclassid "local area connection" "some_custom_class_id"

and in wireshark capturing dhcp handshake. custom class id present in dhcp request, wireshark has option 77 info highlighed error "malformed option".

referring rfc 3004 standard found each instance of user class data should have 1 octet prefix of length can fixe problem , dismiss dhcp wireshark error.

the problem know version of wireshark detect error version 1.10.6 other version can't detect version 1.6.5.

any ideas on this? bug in wireshark ?

first:

dissection of dhcp option 77 first included in wireshark 1.10 wireshark 1.6 , wireshark 1.8 don't know option , don't show error option.

second:

i'm bit unclear question:

are asking why wireshark 1.6 doesn't show error correctly shown in wireshark-1.10 ?

if so, please see 'first' above.

if not please clarify.


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