+# What topology should be generated by the helper functions GNUNET_TESTBED_run()
+# and GNUNET_TESTBED_test_run(). This option has no effect if testbed is
+# initialized with other functions. Valid values can be found at:
+# https://gnunet.org/supported-topologies
+OVERLAY_TOPOLOGY = NONE
+
+# Number of random links to be included to the generate the above topology.
+# Note that not all topologies require this option and ignore it. Topologies
+# requiring this option are RANDOM, SMALL_WORLD and SMALL_WORLD ring.
+# OVERLAY_RANDOM_LINKS =
+
+# This option is required if the OVERLAY_TOPOLOGY is set to FROM_FILE. It is
+# ignored for all other topologies. This option should contain the path to
+# the file containing the topology information. The format of the file is
+# presented at: https://gnunet.org/topology-file-format
+# OVERLAY_TOPOLOGY_FILE = /path/to/topology-file
+
+# The following options are required if the OVERLAY_TOPOLOGY is set to
+# SCALE_FREE. They are ignored in all other cases.
+# The number of maximum peers which can connect to a peer
+SCALE_FREE_TOPOLOGY_CAP = 70
+# The minimum number of peers which a peer has to connect
+SCALE_FREE_TOPOLOGY_M = 5
+