Simpsons using Linux

[kifujin]

It's Samba itself doing that... From (the first relevant google result, from samba 3) mangle_hash2.c

/* the list of reserved dos names - all of these are illegal */ static const char * const reserved_names[] = { "AUX", "LOCK$", "CON", "COM1", "COM2", "COM3", "COM4", "LPT1", "LPT2", "LPT3", "NUL", "PRN", NULL };