Hi all,

On my OpenBSD installation (6.9) one of the log files created by login(1)
seems to be a binary file:
    $ less /var/log/failedlogin
    "failedlogin" may be a binary file. See it anyway?
The hexdump of it is:


openbsd# hexdump -C failedlogin
00000000  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0004c2c0  74 74 79 43 32 00 00 00  00 00 00 00 00 00 00 00  |ttyC2...........|
0004c2d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0004c3e0  00 00 00 00 00 00 00 00  b2 f6 ef 60 00 00 00 00  |...........`....|
0004c3f0  00 00 00 00 00 00 00 00  74 74 79 43 33 00 00 00  |........ttyC3...|
0004c400  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
0004c520  89 97 d0 60 00 00 00 00  00 00 00 00 00 00 00 00  |...`............|
0004c530


What can I learn from this logfile?
A lot of repeating null bytes and "ttyC2" and "ttyC3" does not seems
to be very informative.

Is this an error?

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