[  775.123407][T14756] netdevsim netdevsim439 eni439np1: renamed from eth0
[  775.145517][T14758] netdevsim netdevsim531 eni531np1: renamed from eth1
[  775.852859][T14744] Could not find device with ifindex 2000 in netnsfd 11
[  775.853406][T14744] Could not find netns with fd: 2000
[  775.853788][T14744] Cannot link a netdevsim to itself
[  775.854242][T14744] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).