To get net ioctl number

[Masanobu SAITOH <msaitoh%execsw.org@localhost>]

 Hi.

 This might be FAQ...

 I'd like to get new number for new ioctl. How should I find unused number
for it? I'm going to add new SIOCXXX. It may not enough to grep sys/net/*.h,
so I made usr.bin/kdump-ioctl.c and did

	grep \'i kdump-ioctl.c | sort -n -k 5,5 | uniq | column -t

I think it might not enough because kdump-ioctl.c has no compat-related
code.

 What should I do?

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                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)