[  487.108217] netdevsim netdevsim609 eni609np1: renamed from eth1
[  487.204183] netdevsim netdevsim307 eni307np1: renamed from eth0
[  487.437060] Could not find device with ifindex 2000 in netnsfd 11
[  487.437412] Could not find netns with fd: 2000
[  487.437522] Cannot link a netdevsim to itself
[  487.437647] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).