[  457.109610] netdevsim netdevsim391 eni391np1: renamed from eth0
[  457.110844] netdevsim netdevsim690 eni690np1: renamed from eth1
[  457.208205] Could not find device with ifindex 2000 in netnsfd 11
[  457.208344] Could not find netns with fd: 2000
[  457.208388] Cannot link a netdevsim to itself
[  457.208442] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).