[  508.030891] netdevsim netdevsim297 eni297np1: renamed from eth0
[  508.128056] netdevsim netdevsim572 eni572np1: renamed from eth1
[  508.366302] Could not find device with ifindex 2000 in netnsfd 11
[  508.366520] Could not find netns with fd: 2000
[  508.366624] Cannot link a netdevsim to itself
[  508.366735] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).