Public bug reported:
Ubuntu 18.04 LTS is enforcing RFC-952 hostnames during installation i.e.
does not permit a hostname to start with a digit; although this has been
superseded by RFC-1123 https://www.isc.org/community/rfcs/dns/
2.1 Host Names and Numbers
The syntax of a legal Internet host name was specified in RFC-952
[DNS:4]. One aspect of host name syntax is hereby changed: the
restriction on the first character is relaxed to allow either a
letter or a digit. Host software MUST support this more liberal
syntax.
Even the BIND9 package in the bionic release observes RFC-1123 not
RFC-952. Can this hostname naming constraint please be removed from the
installation.
** Affects: ubiquity (Ubuntu)
Importance: Undecided
Status: New
** Tags: hostname ubiquity
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https://bugs.launchpad.net/bugs/1785726
Title:
Ubuntu 18.04 hostname restriction [ubiquity]
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