[  456.453268] netdevsim netdevsim697 eni697np1: renamed from eth1
[  456.453514] netdevsim netdevsim271 eni271np1: renamed from eth0
[  456.565037] Could not find device with ifindex 2000 in netnsfd 11
[  456.565155] Could not find netns with fd: 2000
[  456.565209] Cannot link a netdevsim to itself
[  456.565272] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).