WARNING: No route found for IPv6 destination :: (no default route?) about p4factory HOT 4 CLOSED

WARNING: No route found for IPv6 destination :: (no default route?) is not really an error here.
TTransportException: Could not connect to localhost:9090 on the other hand is a real error, and usually means that you do not have the switch running. Which command did you use to start the behavioral model switch?

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BTW, the steps described in the README are as follows:

cd p4factory/targets/basic_routing/
make bm
sudo ./behavioral-model

You want to make sure that sudo ./behavioral-model did not return an error.

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First of all, Thank you for your answering.
When i start behavioral model itself getting errors are below

~/p4factory/targets/basic_routing$ make bm
cp /home/maha/p4factory/targets/basic_routing/build//bin/bm behavioral-model
cp: cannot create regular file ‘behavioral-model’: Permission denied
/home/maha/p4factory/targets/basic_routing/../../makefiles/bm.mk:115: recipe for target 'bm' failed
make: *** [bm] Error 1

/p4factory/targets/basic_routing$ sudo ./behavioral-model

No PD RPC server address specified, using 127.0.0.1:9090
No listener specified, switch will run in standalone mode

P4 Program: basic_routing

Starting RPC server on port 9090
bmi_port_interface_add(port_mgr, veth_name, n_veth, pcap_filename): ERROR -1 at main.c:434

Can you give the solution for the above mentioned error??

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The make error could mean that the file is busy because another instance is running.
For the bmi_port_interface_add error, you need to run sudo p4factory/tools/veth_setup.sh as indicated in the README. It will create the veth interfaces needed to run the model.

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