[  456.981272] netdevsim netdevsim392 eni392np1: renamed from eth0
[  456.984476] netdevsim netdevsim684 eni684np1: renamed from eth1
[  457.079173] Could not find device with ifindex 2000 in netnsfd 11
[  457.079287] Could not find netns with fd: 2000
[  457.079331] Cannot link a netdevsim to itself
[  457.079380] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).