> >My biggest concern about this proposal is that it doesn't specify the
> >purposes for which this service can be used. To put it another way,
> >what services can rely on this information, and what services are
> >allowed to break if the result from the ICMPv6 query doesn't correspond
> >to what can be obtained from DNS (or to what applications running on
> >that host believe)?
>
> at IETF48 zeroconf WG and dnsext WG, I heard some comment on making
> distinction between full qualified domain name (which is on the DNS
> database), and hostname (which is configured onto each of the host,
> and do not necessarily the same as FQDN). Not sure if it has wide
> concensus, but it made some sense to me.
> - we look up FQDN through DNS database
> - we look up hostname through /etc/hosts
> (i'm not sure if it is really correct)
> - gethostname(3) returns hostname, not FQDN
my experience is more like:
- hostname is set as part of system configuration (during boot)
(you can't look it up in /etc/hosts because you need to know
what to look for)
- hostname can either be an alias (usually just a label) or an FQDN
- you can sometimes look up hostname in local DNS and get back an FQDN
- the mapping from hostname to FQDN might or might not involve
adding a domain suffix to the hostname.
> it is kind of confusing, but this gave me a way to understand the
> current situation. if we are okay with the distinction,
> we may be able to state the following:
> - if we are to lookup some name via ICMPv6 name lookup, it would
> be hostname, not FQDN.
> we need to update name-lookup draft again, though.
okay, but this still doesn't answer the question. what is the purpose of
this service, and what things are allowed to depend on it?
Keith
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