[Bug 999337] Re: resolveconf doesn't support "dns-options" in network/interfaces

[Nathan Stratton Treadway]

Given that actually supporting the "options" resolv.conf option isn't
all that easy (it would require having the update.d/libc script combine
all the "options" lines from all interfaces, and somehow dealing with
any duplicate options found, etc.), I'm guessing that the best
resolution here is to edit resolvconf(8) so that it just lists
explicitly the dns-* options that are supported in the interfaces file
(and only refer to resolv.conf(5) as a source of additional details
about how the resolver library handles each of those specific options).

(Related to the discussion in LP: #990660, this revised "ifup"
description could also include some sort of mention that the "dns-
domain" and "dns-search" options are merged together by the
update.d/libc processing.)

** Summary changed:

- resolveconf doesn't support "dns-options" in network/interfaces
+ misleading resolvconf(8) discussion r.e. supported network/interfaces dns-* options

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https://bugs.launchpad.net/bugs/999337

Title:
  misleading resolvconf(8) discussion r.e. supported network/interfaces
  dns-* options

Status in “resolvconf” package in Ubuntu:
  New

Bug description:
  I noticed a minor discrepancy between the resolvconf documentation and
  "reality".

  On the one hand, the resolvconf(8) man page's discussion about the
  /etc/network/interfaces file says:

     For each other valid resolv.conf(5) configuration option,  you  can  include,
     in  the stanza, one line beginning with that option name with a dns- prefix.

  , and the resolv.conf(5) page lists the following configuration
  options: "nameserver", "domain", "search", "sortlist", and "options".

  On the other hand, the /etc/network/if-up.d/000resolvconf file
  actually only includes support for the first four of those
  configuration options -- that is, support for the "options" option is
  not included.

  (The resolvconf(8) and 000resolvconf files I'm looking at come from
  resolvconf 1.63ubuntu11 (Precise).)

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