https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13733
Graham Bloice <graham.blo...@trihedral.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |CONFIRMED
CC| |graham.blo...@trihedral.com
--- Comment #1 from Graham Bloice <graham.blo...@trihedral.com> ---
I don't think a qualifier of 17 is valid for Binary Input g1v1.
According to the DNP3 Spec, Vol 6, Part 3, table 3-2 the acceptable qualifiers
for g1v1 are 00 and 01, i.e. a 1 or 2 octet range start-stop field, no object
prefixes.
This is amplified in the discussion of the preferred qualifier field in Vol 2
Part 1, table 2-7 which states that for static objects (which includes Binary
Input g1v1), qualifier codes 00 & 01 are preferred.
While I can't see anything in the spec that says don't do this, it appears to
be non-standard and may not be supported by DNP3 masters that do conform to the
standard.
Qualifier 17 is acceptable for Binary Input events, g2.
While I think it's OK to modify the dissector to handle such non-standard
behaviour, I think it's also worth adding an "Expert Info" to indicate the
non-standard behaviour.
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