diff --git a/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg b/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg
index c9bb4cf..0dc4150 100644
--- a/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg
+++ b/openbsc/doc/examples/osmo-gtphub/osmo-gtphub.cfg
@@ -21,3 +21,5 @@
  ! Proxy with nonstandard ports or separate IPs:
  !ggsn-proxy ctrl 127.0.0.3 2123 user 127.0.0.5 2152
 
+ ! Add a name server for GGSN resolution
+ !grx-dns-add 192.168.0.1