[  489.240123] netdevsim netdevsim390 eni390np1: renamed from eth0
[  489.335752] netdevsim netdevsim527 eni527np1: renamed from eth1
[  489.577794] Could not find device with ifindex 2000 in netnsfd 11
[  489.578073] Could not find netns with fd: 2000
[  489.578147] Cannot link a netdevsim to itself
[  489.578284] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).