[  725.815227][T13031] netdevsim netdevsim420 eni420np1: renamed from eth0
[  725.842260][T13033] netdevsim netdevsim512 eni512np1: renamed from eth1
[  726.449059][T13019] Could not find device with ifindex 2000 in netnsfd 11
[  726.449899][T13019] Could not find netns with fd: 2000
[  726.450283][T13019] Cannot link a netdevsim to itself
[  726.450749][T13019] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).