/etc/ppp/ip-up.d/000resolvconf is in resolvconf 1.63ubuntu11.
This file is owned by root:root, with mode 0o755.
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 | #!/bin/sh
#
# PPP up hook script for resolvconf
#
# Reconfigures resolver to take into account
# the appearance of the ppp interface.
#
# This file is part of the resolvconf package.
#
[ -x /sbin/resolvconf ] || exit 0
R=""
if [ "$DNS1" ] ; then
R="${R}nameserver $DNS1
"
fi
if [ "$DNS2" ] ; then
R="${R}nameserver $DNS2
"
fi
echo -n "$R" | /sbin/resolvconf -a "$PPP_IFACE"
|