units: systemd-resolved should start before network-online.target and nss-lookup...

systemd-resolved provides
1. local API via NSS and D-Bus
2. kind of a local "DNS proxy" through its stub listener
The 1st item should be started before nss-lookup.target.
The 2nd item should be started before network-online.target,
because if the networking works in general, then DNS (and DNS proxy) should too.

Fixes #5650

diff --git a/units/systemd-resolved.service.m4.in b/units/systemd-resolved.service.m4.in
index 70491e0..6c22893 100644 (file)
--- a/units/systemd-resolved.service.m4.in
+++ b/units/systemd-resolved.service.m4.in
@@ -12,6 +12,8 @@ Documentation=http://www.freedesktop.org/wiki/Software/systemd/resolved
 Documentation=http://www.freedesktop.org/wiki/Software/systemd/writing-network-configuration-managers
 Documentation=http://www.freedesktop.org/wiki/Software/systemd/writing-resolver-clients
 After=systemd-networkd.service network.target
+Before=network-online.target nss-lookup.target
+Wants=nss-lookup.target
 
 # On kdbus systems we pull in the busname explicitly, because it
 # carries policy that allows the daemon to acquire its name.