[  523.003358] netdevsim netdevsim437 eni437np1: renamed from eth0
[  523.101359] netdevsim netdevsim678 eni678np1: renamed from eth1
[  523.331776] Could not find device with ifindex 2000 in netnsfd 11
[  523.331965] Could not find netns with fd: 2000
[  523.332051] Cannot link a netdevsim to itself
[  523.332166] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).