[  486.843604] netdevsim netdevsim390 eni390np1: renamed from eth0
[  486.945097] netdevsim netdevsim548 eni548np1: renamed from eth1
[  487.338445] Could not find device with ifindex 2000 in netnsfd 11
[  487.338589] Could not find netns with fd: 2000
[  487.338668] Cannot link a netdevsim to itself
[  487.338777] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).