Wireshark-bugs: [Wireshark-bugs] [Bug 12622] MNC digits in IMSI in messages (like Attach Request

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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Fri, 15 Jul 2016 16:22:25 +0000

changed bug 12622


What Removed Added
CC   [email protected]

Comment # 2 on bug 12622 from 
There is no way to know the number of MNC digits an an IMSI (the number being
indicated in a USIM elementary file). 
Wireshark tries to guess based on a list of well known PLMN Id (based on ITU
E.212 spec). If the PLMN does not belong to this list, Wireshark will try to
guess and has 50% chance to fail. Maybe we should not split the IMSI if the
PLMN is unknown. Or if you take a PLMN code that collides with an existing one,
it will also fail (I do not have access to the source code right now to see in
which case you fall).

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