[  488.779189] netdevsim netdevsim509 eni509np1: renamed from eth0
[  488.876182] netdevsim netdevsim534 eni534np1: renamed from eth1
[  489.090617] Could not find device with ifindex 2000 in netnsfd 11
[  489.090905] Could not find netns with fd: 2000
[  489.090985] Cannot link a netdevsim to itself
[  489.091070] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).