[  456.719785] netdevsim netdevsim446 eni446np1: renamed from eth0
[  456.720561] netdevsim netdevsim683 eni683np1: renamed from eth1
[  456.822384] Could not find device with ifindex 2000 in netnsfd 11
[  456.822500] Could not find netns with fd: 2000
[  456.822554] Cannot link a netdevsim to itself
[  456.822616] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).