[  488.868517] netdevsim netdevsim512 eni512np1: renamed from eth1
[  488.965892] netdevsim netdevsim449 eni449np1: renamed from eth0
[  489.169654] Could not find device with ifindex 2000 in netnsfd 11
[  489.169817] Could not find netns with fd: 2000
[  489.169890] Cannot link a netdevsim to itself
[  489.169976] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).