[  753.459370][T14496] netdevsim netdevsim507 eni507np1: renamed from eth0
[  753.477847][T14498] netdevsim netdevsim540 eni540np1: renamed from eth1
[  754.062453][T14484] Could not find device with ifindex 2000 in netnsfd 11
[  754.063012][T14484] Could not find netns with fd: 2000
[  754.063370][T14484] Cannot link a netdevsim to itself
[  754.063802][T14484] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).