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Subject: |
26.0.50; DNS mode and IPv6 reverse zones |
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Date: |
Sun, 07 May 2017 20:51:03 +0200 |
Last week I was trying to set up reverse delegations for some newly
assigned IPv6 address space. It was... painful.
IPv6 addresses are ugly enough in their normal format, but when used in
a reverse zone, they need to be converted to individual nibbles
separated by dots, reversed, and have .ip6.arpa. appended. The result
is less than human friendly.
So I've written a new feature for dns-mode.el that allows me to mostly
relate to the normal IPv6 format, and convert automatically to the
nibble format. I can for instance do this in a (part of a) zone file,
where I'm only interested in defining hosts in the last 16 bits of the
address:
$ORIGIN 2a0a:3dc0:10::/112
::1/-112 IN PTR www.example.com.
And then, by pressing C-c C-e on each of the IPv6 addresses, end up with
the necessary
$ORIGIN 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.c.d.3.a.0.a.2.ip6.arpa.
1.0.0.0 IN PTR www.example.com.
Assuming I'm doing this as I type, I can then yank the last
standard-format address, do a minimal edit, C-c C-e again, and continue
typing to define the next PTR record.
I'm hoping this sounds useful to other people as well. I'll pass along
the patch as soon as I get a bug# to attach to it. :)
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--- Begin Message ---
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Subject: |
Re: bug#26820: 26.0.50; DNS mode and IPv6 reverse zones |
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Date: |
Tue, 23 May 2017 20:36:04 -0400 |
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User-agent: |
Gnus (www.gnus.org), GNU Emacs (www.gnu.org/software/emacs/) |
Version: 26.1
Thanks; tweaked and applied as 8f6550b.
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