[  521.802822] netdevsim netdevsim462 eni462np1: renamed from eth0
[  521.899181] netdevsim netdevsim673 eni673np1: renamed from eth1
[  522.123716] Could not find device with ifindex 2000 in netnsfd 11
[  522.123910] Could not find netns with fd: 2000
[  522.124028] Cannot link a netdevsim to itself
[  522.124130] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).