[  512.179031] netdevsim netdevsim515 eni515np1: renamed from eth1
[  512.275740] netdevsim netdevsim280 eni280np1: renamed from eth0
[  512.499632] Could not find device with ifindex 2000 in netnsfd 11
[  512.499858] Could not find netns with fd: 2000
[  512.499971] Cannot link a netdevsim to itself
[  512.500111] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).