Comment 7 for bug 1498620

No wait. It says failed, but the files are at the right level.

(amd64)ubuntu@localhost:~$ systemctl status pppd-dns.service
● pppd-dns.service - Restore /etc/resolv.conf if the system crashed before the ppp link was shut down.
   Loaded: loaded (/lib/systemd/system/pppd-dns.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2015-09-23 20:17:44 UTC; 3min 58s ago
  Process: 603 ExecStart=/etc/ppp/ip-down.d/0000usepeerdns (code=exited, status=203/EXEC)
 Main PID: 603 (code=exited, status=203/EXEC)

$ find /etc/ppp/ -type f
/etc/ppp/ip-up
find: `/etc/ppp/peers': Permission denied
/etc/ppp/chap-secrets
/etc/ppp/ip-up.d/000resolvconf
/etc/ppp/ip-up.d/0000usepeerdns
/etc/ppp/ipv6-up
/etc/ppp/pap-secrets
/etc/ppp/options
/etc/ppp/ip-down
/etc/ppp/ip-down.d/000resolvconf
/etc/ppp/ip-down.d/0000usepeerdns
/etc/ppp/ipv6-down