[  456.165057] netdevsim netdevsim423 eni423np1: renamed from eth0
[  456.165783] netdevsim netdevsim617 eni617np1: renamed from eth1
[  456.256662] Could not find device with ifindex 2000 in netnsfd 11
[  456.256761] Could not find netns with fd: 2000
[  456.256815] Cannot link a netdevsim to itself
[  456.256877] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).