[  769.049742][T14759] netdevsim netdevsim636 eni636np1: renamed from eth1
[  769.061429][T14757] netdevsim netdevsim503 eni503np1: renamed from eth0
[  769.821146][T14745] Could not find device with ifindex 2000 in netnsfd 11
[  769.822217][T14745] Could not find netns with fd: 2000
[  769.823533][T14745] Cannot link a netdevsim to itself
[  769.824783][T14745] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).