[Bug 1680811] Re: Request to add wireguard interface to interface-order

[Jason A. Donenfeld]

It might make more sense to simply switch to using openresolv, which is
a proper resolvconf implementation, which doesn't rely on this silly
hard-coded list. Alternatively, you could just backport features one by
one from openresolv, such as '-m 0 and '-x'.

But really, since openresolv has no downsides and only upsides, and
Debian's homebaked resolvconf is rotting and has issues, you'd really be
better off just removing Debian's resolvconf from Ubuntu and relying
instead on openresolv.

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https://bugs.launchpad.net/bugs/1680811

Title:
  Request to add wireguard interface to interface-order

Status in resolvconf package in Ubuntu:
  Triaged

Bug description:
  This started from https://github.com/jlund/streisand/issues/557. Basically wg* namespace is not in interface-order and acts last in * scope, and this makes resolv.conf to stay in the same state.
  I suggest the following change:
  :/etc/resolvconf/interface-order
  # interface-order(5)
  lo.inet6
  lo.inet
  lo.@(dnsmasq|pdnsd)
  lo.!(pdns|pdns-recursor)
  lo
  +wg*
  tun*
  tap*
  hso*
  em+([0-9])?(_+([0-9]))*
  p+([0-9])p+([0-9])?(_+([0-9]))*
  @(br|eth)*([^.]).inet6
  @(br|eth)*([^.]).ip6.@(dhclient|dhcpcd|pump|udhcpc)
  @(br|eth)*([^.]).inet
  @(br|eth)*([^.]).@(dhclient|dhcpcd|pump|udhcpc)
  @(br|eth)*
  @(ath|wifi|wlan)*([^.]).inet6
  @(ath|wifi|wlan)*([^.]).ip6.@(dhclient|dhcpcd|pump|udhcpc)
  @(ath|wifi|wlan)*([^.]).inet
  @(ath|wifi|wlan)*([^.]).@(dhclient|dhcpcd|pump|udhcpc)
  @(ath|wifi|wlan)*
  ppp*
  *

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