[  502.094167] netdevsim netdevsim491 eni491np1: renamed from eth0
[  502.094675] netdevsim netdevsim644 eni644np1: renamed from eth1
[  502.185375] Could not find device with ifindex 2000 in netnsfd 11
[  502.185464] Could not find netns with fd: 2000
[  502.185509] Cannot link a netdevsim to itself
[  502.185560] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).