[  523.669758] netdevsim netdevsim408 eni408np1: renamed from eth0
[  523.767540] netdevsim netdevsim740 eni740np1: renamed from eth1
[  523.998999] Could not find device with ifindex 2000 in netnsfd 11
[  523.999180] Could not find netns with fd: 2000
[  523.999274] Cannot link a netdevsim to itself
[  523.999401] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).