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On 10/31/2011 6:58 AM, Kristen Eisenberg wrote:
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cite="mid:1320058691.80122.YahooMailNeo@web122319.mail.ne1.yahoo.com"
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<div>Ben Croswell writes: <br>
<br>
> In that case technically you are creating undelegated
subdomains for each<br>
> router.<br>
> The dot is a delimiter and can't be part of a hostname. <br>
> <br>
<br>
I was thinking you are wrong.<br>
Period is somewhat permitted in a hostname. </div>
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</blockquote>
People are using "hostname" to mean different things.<br>
<br>
If "hostname" is interpreted to mean "the string that one device
uses to represent another so that the two of them can communicate",
then obviously whether dots are permitted in hostnames, will depend
wholly on what mechanism translates the string into a network
address: if the mechanism is DNS, or an /etc/hosts file, then dots
are permitted in the string; in the case of other name-resolution
mechanisms (e.g. NetBIOS name resolution?), dots may or may not be
supported.<br>
<br>
If, on the other hand, "hostname" is interpreted to mean "everything
preceding the first dot in the standard representation of the
network entity", then by definition such a "hostname" will not, and
cannot contain a dot.<br>
<br>
- Kevin<br>
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