[  515.617406] netdevsim netdevsim745 eni745np1: renamed from eth1
[  515.715734] netdevsim netdevsim391 eni391np1: renamed from eth0
[  515.898712] Could not find device with ifindex 2000 in netnsfd 11
[  515.898893] Could not find netns with fd: 2000
[  515.898987] Cannot link a netdevsim to itself
[  515.899090] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).