systemd: depend on networking-online.target

Related: SYS#6400
Change-Id: Ib6c78c76c5f13b9482428ce653a61b03b2aca1d3
diff --git a/contrib/systemd/osmo-msc.service b/contrib/systemd/osmo-msc.service
index 36849f7..f21aec7 100644
--- a/contrib/systemd/osmo-msc.service
+++ b/contrib/systemd/osmo-msc.service
@@ -4,6 +4,8 @@
 Wants=osmo-mgw.service
 After=osmo-hlr.service
 After=osmo-hnbgw.service
+After=network-online.target
+Wants=network-online.target
 
 [Service]
 Type=simple