[  486.643568] netdevsim netdevsim281 eni281np1: renamed from eth0
[  486.643760] netdevsim netdevsim539 eni539np1: renamed from eth1
[  486.741321] Could not find device with ifindex 2000 in netnsfd 11
[  486.741420] Could not find netns with fd: 2000
[  486.741463] Cannot link a netdevsim to itself
[  486.741514] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).