[  487.168744] netdevsim netdevsim401 eni401np1: renamed from eth0
[  487.170110] netdevsim netdevsim535 eni535np1: renamed from eth1
[  487.256010] Could not find device with ifindex 2000 in netnsfd 11
[  487.256105] Could not find netns with fd: 2000
[  487.256147] Cannot link a netdevsim to itself
[  487.256196] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).