[  918.535701][ T9685] netdevsim netdevsim620 eni620np1: renamed from eth1
[  918.560742][ T9690] netdevsim netdevsim508 eni508np1: renamed from eth0
[  920.441691][ T9680] Could not find device with ifindex 2000 in netnsfd 11
[  920.443193][ T9680] Could not find netns with fd: 2000
[  920.444189][ T9680] Cannot link a netdevsim to itself
[  920.445856][ T9680] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).