config is in resolvconf 1.78ubuntu2.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45  | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
eni_seems_adequate()
{
	# Assume that if _any_ dns-nameserver[s] line appears in
	# the interfaces file then that is adequate.
	# Formerly: [ -f /etc/network/interfaces ] && grep -q dns-nameservers /etc/network/interfaces > /dev/null
	# but now we use ifquery for correctness.
	ifquery $(ifquery --list -a) | grep -q '^dns-nameserver'
}
original_seems_nm_generated()
{
	# /etc/resolv.conf is a file, not a symlink (and thus
	# soon to be moved to resolv.conf.d/original) and seems
	# to have been generated by NetworkManager.
	[ -s /etc/resolv.conf ] \
	&& ! [ -L /etc/resolv.conf ] \
	&& grep -q '# Generated by NetworkManager' /etc/resolv.conf >/dev/null 2>&1
}
db_input low resolvconf/linkify-resolvconf || :
db_go
db_get resolvconf/linkify-resolvconf
if \
	[ "$RET" = "true" ] \
	&& ! [ -e /var/lib/resolvconf/linkified ] \
	&& ! [ -e /etc/resolvconf/resolv.conf.d/tail ] \
	&& ! [ -L /etc/resolvconf/resolv.conf.d/tail ]
then
	if eni_seems_adequate || original_seems_nm_generated ; then
		db_input low resolvconf/link-tail-to-original || :
	else
		db_input medium resolvconf/link-tail-to-original || :
	fi
fi
db_input medium resolvconf/downup-interfaces || :
db_go
db_stop
 |