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✎ CARVE FLESH

EDITING: 0000usepeerdns

#!/bin/sh -e

# this variable is only set if the usepeerdns pppd option is being used
[ "$USEPEERDNS" ] || exit 0

# exit if the resolvconf package is installed
[ -x /sbin/resolvconf ] && exit 0

case "$6" in
  nm-pptp-service-*|nm-l2tp-service-*|/org/freedesktop/NetworkManager/PPP/*)
        # NetworkManager handles it
        exit 0
        ;;
esac

# exit if systemd-resolved is running
[ -e /run/systemd/system ] && \
  systemctl is-active --quiet systemd-resolved.service &&
  exit 0

# create the file if it does not exist
if [ ! -e /etc/resolv.conf ]; then
  : > /etc/resolv.conf
fi

# follow any symlink to find the real file
REALRESOLVCONF=$(readlink --canonicalize /etc/resolv.conf)

# merge the new nameservers with the other options from the old configuration
{
  cat /etc/ppp/resolv.conf
  grep --invert-match '^nameserver[[:space:]]' "$REALRESOLVCONF" || true
} > "$REALRESOLVCONF.tmp"

# backup the old configuration and install the new one
cp -a "$REALRESOLVCONF" "$REALRESOLVCONF.pppd-backup.$PPP_IFACE"
mv -f "$REALRESOLVCONF.tmp" "$REALRESOLVCONF"

# restart nscd because resolv.conf has changed
if [ -e /var/run/nscd.pid ]; then
  /etc/init.d/nscd restart || true
fi

exit 0

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 0000usepeerdns	?	1.2 KB	2022-02-23 15:12	EDIT
📄 bind9	?	289 B	2019-09-30 18:39	EDIT
📄 sendmail	?	1.3 KB	2018-01-13 22:43	EDIT