[  522.898420] netdevsim netdevsim620 eni620np1: renamed from eth1
[  522.994618] netdevsim netdevsim433 eni433np1: renamed from eth0
[  523.258883] Could not find device with ifindex 2000 in netnsfd 11
[  523.259090] Could not find netns with fd: 2000
[  523.259172] Cannot link a netdevsim to itself
[  523.259270] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).