[  457.664785] netdevsim netdevsim500 eni500np1: renamed from eth0
[  457.665243] netdevsim netdevsim622 eni622np1: renamed from eth1
[  457.761834] Could not find device with ifindex 2000 in netnsfd 11
[  457.761945] Could not find netns with fd: 2000
[  457.761992] Cannot link a netdevsim to itself
[  457.762038] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).