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Homeplug AV

asked 2019-10-28 20:31:47 +0000

uli gravatar image

updated 2019-10-28 20:34:01 +0000

Wireshark Version 3.0.6 (compiled from source under ubuntu 18.04 LTS) shows:

HomePlug AV protocol

MAC Management Header
    .... ...1 = Version: 1.1 (1)
    Type: CM_BRG_INFO.CNF (Get Bridge Informations Confirmation) (0x6021)
        .... ..01 = LSB: Confirm (0x1)
        .... .00. = MSB: STA - Central Coordinator (0x0)
    Fragmentation Info: 0x0000
        .... 0000 = Fragment count: 0
        0000 .... = Fragment index: 0
        Fragment Sequence number: 0
Get Bridge Informations Confirmation

0x6021 is Station - Station is .... .00. = MSB: STA - Central Coordinator (0x0) a bug?

I changed

#define HOMEPLUG_AV_MMTYPE_MSB_MASK       0x06

in packet-homeplug-av.c to

#define HOMEPLUG_AV_MMTYPE_MSB_MASK       0xE0

then Wireshark shows: HomePlug AV protocol

MAC Management Header
    .... ...1 = Version: 1.1 (1)
    Type: CM_BRG_INFO.CNF (Get Bridge Informations Confirmation) (0x6021)
        .... ..01 = LSB: Confirm (0x1)
        011. .... = MSB: STA - STA (0x3)
    Fragmentation Info: 0x0000
        .... 0000 = Fragment count: 0
        0000 .... = Fragment index: 0
        Fragment Sequence number: 0
Get Bridge Informations Confirmation
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2 Answers

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answered 2019-10-29 03:14:26 +0000

Guy Harris gravatar image

This looks like bug 16158; a fix will be in the next 2.6.x and 3.0.x releases, which are currently scheduled for 2019-12-04.

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thanks, yes it is this bug and my proposed fix is in this bugfix.I will wait for next release.

uli gravatar imageuli ( 2019-10-29 11:10:02 +0000 )edit
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answered 2019-10-28 21:38:24 +0000

grahamb gravatar image

See the Wiki page on Submitting Patches for info on how to submit your proposed change.

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Asked: 2019-10-28 20:31:47 +0000

Seen: 33 times

Last updated: Oct 29