[  502.351407] netdevsim netdevsim471 eni471np1: renamed from eth0
[  502.352512] netdevsim netdevsim689 eni689np1: renamed from eth1
[  502.450611] Could not find device with ifindex 2000 in netnsfd 11
[  502.450703] Could not find netns with fd: 2000
[  502.450754] Cannot link a netdevsim to itself
[  502.450816] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).