config: Set default internetworking model to tcfilter

tc filtering handles network connect much more cleanly
without the need to reprogram the network interface provided
by the network plugin.
It also makes it possible to support ipvlan.
Hence make this as the default.

bridged mode should be eventually deprecated.

Signed-off-by: Archana Shinde <archana.m.shinde@intel.com>

Makefile

@@ -135,7 +135,7 @@ DEFMEMSLOTS := 10
 #Default number of bridges
 DEFBRIDGES := 1
 #Default network model
-DEFNETWORKMODEL := macvtap
+DEFNETWORKMODEL := tcfilter
 #Default entropy source
 DEFENTROPYSOURCE := /dev/urandom
 

cli/config/configuration.toml.in

@@ -230,6 +230,13 @@ path = "@NETMONPATH@"
 #   - macvtap
 #     Used when the Container network interface can be bridged using
 #     macvtap.
+#
+#   - tcfilter
+#     Uses tc filter rules to redirect traffic from the network interface
+#     provided by plugin to a tap interface connected to the VM.
+#     Supports ipvlan.
+#
+#     default model has been set to tcfilter.
 internetworking_model="@DEFNETWORKMODEL@"
 
 # If enabled, the runtime will create opentracing.io traces and spans.