[  483.885771] netdevsim netdevsim501 eni501np1: renamed from eth0
[  483.886675] netdevsim netdevsim704 eni704np1: renamed from eth1
[  483.995346] Could not find device with ifindex 2000 in netnsfd 11
[  483.995454] Could not find netns with fd: 2000
[  483.995495] Cannot link a netdevsim to itself
[  483.995537] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).