[  457.125747] netdevsim netdevsim391 eni391np1: renamed from eth0
[  457.126206] netdevsim netdevsim561 eni561np1: renamed from eth1
[  457.208839] Could not find device with ifindex 2000 in netnsfd 11
[  457.208933] Could not find netns with fd: 2000
[  457.208974] Cannot link a netdevsim to itself
[  457.209018] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).