[  483.719642] netdevsim netdevsim554 eni554np1: renamed from eth1
[  483.719848] netdevsim netdevsim454 eni454np1: renamed from eth0
[  483.804602] Could not find device with ifindex 2000 in netnsfd 11
[  483.804684] Could not find netns with fd: 2000
[  483.804727] Cannot link a netdevsim to itself
[  483.804777] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).