[  487.011821] netdevsim netdevsim501 eni501np1: renamed from eth0
[  487.113522] netdevsim netdevsim683 eni683np1: renamed from eth1
[  487.550778] Could not find device with ifindex 2000 in netnsfd 11
[  487.550950] Could not find netns with fd: 2000
[  487.551021] Cannot link a netdevsim to itself
[  487.551114] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).