> Am 27.01.2022 um 06:59 schrieb Tim via users <users@lists.fedoraproject.org>: > > …. > > * DHCP can accept a hostname from a client, but it doesn't have to. > * DHCP can give a hostname to a client, but it doesn't have to, and > the client doesn't have to accept it. > * A host can find out its hostname from its IP address. I recall > having to specify how many dots to count to separate hostname from > domain name (e.g. if you were fred.bargle.flargle.net.au, your > domain name could bargle.flargle.net.au or flargle.net.au, and > therefore there were two possibilities of what your hostname might > be). > > A particular advantage of having the host and domain names being worked > out from polling your DNS server is that the details will be consistent > with what everything else thinks you are.
A particular disadvantage is that a reverse lookup does not have to be unambiguous. On the contrary, it is very common that several hosts share one IP. So, in many cases it will provide you with a list of hostnames. Which one to choose? A DHCP provided hostname is unambiguous (or empty). For the Apache example: If Apache finds a unique hostname, it will be used. A warning is issued if inconsistencies occur (e.g. between hostname and DNS check). No problem for Apache, in case of doubt the request is delivered to the default server. A valid solution. _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
