[  487.405015] netdevsim netdevsim535 eni535np1: renamed from eth1
[  487.501694] netdevsim netdevsim500 eni500np1: renamed from eth0
[  487.694638] Could not find device with ifindex 2000 in netnsfd 11
[  487.694863] Could not find netns with fd: 2000
[  487.694934] Cannot link a netdevsim to itself
[  487.695035] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).