[  456.557338] netdevsim netdevsim461 eni461np1: renamed from eth0
[  456.558504] netdevsim netdevsim590 eni590np1: renamed from eth1
[  456.652279] Could not find device with ifindex 2000 in netnsfd 11
[  456.652384] Could not find netns with fd: 2000
[  456.652428] Cannot link a netdevsim to itself
[  456.652478] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).