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Situation : we were - and still are partially - on a domain name (dark.void) we wish to get rid of! Here is the current content of the different networking configuration files in an attempt to switch to the new space.opened domain...

/etc/hosts

127.0.0.1   localhost
127.0.1.1   supernova.space.opened  supernova

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

PS: I've added the supernove.space.opened to the second line based on How to set the fully qualified domain name in 12.04?, but to no avail, even after reboot...

/etc/hostname

supernova

/etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

Not used since configured by network-manager...

/etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search space.opened space.damned space.warped dark.void dust.hidden

I run bind9 locally to test DNS changes before deploying...

...

So why hostname -A still gives me supernova.dark.void instead of supernova.space.opened?

  • Thanks a lot @adonis that was it, hence my answer (but why didn't you answer it yourself? Had doubt?) – ionreflex Sep 15 '15 at 17:00
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... as stated by adonis in the comment, I've overlooked the record for the host in the 1.168.192.in-addr.arpa DNS zone! Once corrected, everything looks good :

Before...

nulinflux@supernova:~$ dig -x 192.168.1.254

;; ANSWER SECTION:
254.1.168.192.in-addr.arpa. 259200 IN   PTR supernova.dark.void.

After...

nulinflux@supernova:~$ dig -x 192.168.1.254

;; ANSWER SECTION:
254.1.168.192.in-addr.arpa. 259200 IN   PTR supernova.space.opened.

nulinflux@supernova:~$ hostname -A

supernova.space.opened

Case closed!

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