[  512.251701] netdevsim netdevsim463 eni463np1: renamed from eth0
[  512.349398] netdevsim netdevsim678 eni678np1: renamed from eth1
[  512.555289] Could not find device with ifindex 2000 in netnsfd 11
[  512.555453] Could not find netns with fd: 2000
[  512.555527] Cannot link a netdevsim to itself
[  512.555614] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).