Kea hostname with periods at the end

impact1560

I've noticed that the hostname has an extra period at the end when using Kea DHCP. Is there a way to correct this, or could this be a bug?

johnpoz

@impact1560 that is proper for a fqdn..

There is nothing to change. But to be honest .local as tld is a horrible choice.. This the mdns domain, shouldn't really use it for normal dns.

The trailing . is the root.. you will see that in any query as the actual question and the answer even if you leave it off

$ dig www.google.com

; <<>> DiG 9.16.50 <<>> www.google.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 52269
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;www.google.com.                        IN      A

;; ANSWER SECTION:
www.google.com.         160     IN      A       172.217.0.164

;; Query time: 0 msec
;; SERVER: 192.168.9.253#53(192.168.9.253)
;; WHEN: Sat Sep 28 00:05:03 Central Daylight Time 2024
;; MSG SIZE  rcvd: 59

https://datatracker.ietf.org/doc/html/rfc8499
DNS Terminology

         The presentation format for names in the global DNS is a list
         of labels ordered by decreasing distance from the root, encoded
         as ASCII, with a "." character between each label.  In
         presentation format, a fully-qualified domain name includes the
         root label and the associated separator dot.  For example, in
         presentation format, a fully-qualified domain name with two
         non-root labels is always shown as "example.tld." instead of
         "example.tld".  [RFC1035] defines a method for showing octets
         that do not display in ASCII.

         The common display format is used in applications and free
         text.  It is the same as the presentation format, but showing
         the root label and the "." before it is optional and is rarely
         done.  For example, in common display format, a fully-qualified
         domain name with two non-root labels is usually shown as
         "example.tld" instead of "example.tld.".  Names in the common
         display format are normally written such that the
         directionality of the writing system presents labels by
         decreasing distance from the root (so, in both English and the
         C programming language the root or Top-Level Domain (TLD) label
         in the ordered list is rightmost; but in Arabic, it may be
         leftmost, depending on local conventions).

Presentation format vs "common" format

impact1560

@johnpoz said in Kea hostname with periods at the end:

tld

thank you

johnpoz

@impact1560 top level domain..

netgate.com.

com is the tld

pfsense.org

org is the tld, .local as a tld has been hijacked my apple and their mdns..

https://en.wikipedia.org/wiki/.local

.local has since been designated for use in link-local networking, in applications of multicast DNS (mDNS) and zero-configuration networking (zeroconf) so that DNS service may be established without local installations of conventional DNS infrastructure on local area networks.

The recommend domains you should use locally is home.arpa or newer is .internal, so in your case with cos.local would become say cos.home.arpa or cos.internal would be much better choices.

impact1560

@johnpoz

Thank You, I never knew that.