[  517.504691] netdevsim netdevsim567 eni567np1: renamed from eth1
[  517.601955] netdevsim netdevsim500 eni500np1: renamed from eth0
[  517.836393] Could not find device with ifindex 2000 in netnsfd 11
[  517.836594] Could not find netns with fd: 2000
[  517.836677] Cannot link a netdevsim to itself
[  517.836801] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).