[TriLUG] OT: getting dhcp client to pass hostname - iPod 2nd gen

[Kevin Kreamer]

Will his friend's iPod be named "once bit my sister"?

Kevin

On Sat, Mar 7, 2009 at 23:07, Joseph Mack NA3T <jmack at wm7d.net> wrote:

> On Sat, 7 Mar 2009, Matt Pusateri wrote:
>
>  So when more devices appear, I assume someone gives them the WPA key?
>>
>
> my son, I don't even have to be around.
>
>  I'm not really sure why it matters what device it is, it's not like your
>> probably trying to connect to the ipod(s) from your computer?
>>
>
> There's no ports open, so you can't get in from the outside. I googled for
> getting a shell prompt on the iPod and you can't do that by default. You
> have to hack it and this hasn't been done for the current iPod. You can get
> a shell prompt on a DD-WRT, so why not on an iPod? Apparently Apple doesn't
> want people doing this. I would have thought at least port 22 would be
> listening ;-)
>
>  Don't get me wrong, I agree it should behave courteously, but I missing
>> why it matters?
>>
>
> I don't like seeing dhcp leases for computers named NULL. Maybe it's just
> my view that if anything isn't working as it's supposed to, I should find
> out why.
>
> There's more data since I first posted.
>
> The name originally was "a-moose" which gave the NULL problem. I asked my
> son to change the name to "amoose", and dhcpd still showed "NULL", so I
> thought the iPod wasn't sending its name.
>
> When trying to nmap the device by it's IP, I get back replies from
> "a_moose". To my surprise, I find the name "a_moose" is in the (dhcpd
> updated) DNS tables. The name in DNS can only come from dhcpd, so apparently
> the device has sent its name, which is output as NULL by dhcpd, but recorded
> as "a_moose" in DNS. It turns out my son had misunderstood my request and
> used "a moose" as the name. (He's not a *nix'er, and doesn't know that
> blanks are a problem in *nix names.)
>
> It seems likely that the problem is munging the blank char or '-' char.. By
> the time it arrives at DNS the blank has been changed to a "_". I assume
> dhcpd barfs when trying to output a name with a blank or a '-'. The thing to
> do tomorrow is to get my son to change the name to "amoose".
>
> Joe
> --
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) wm7d (dot) net - azimuthal equidistant map
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