[  491.826473] netdevsim netdevsim537 eni537np1: renamed from eth1
[  491.922672] netdevsim netdevsim472 eni472np1: renamed from eth0
[  492.147141] Could not find device with ifindex 2000 in netnsfd 11
[  492.147492] Could not find netns with fd: 2000
[  492.147599] Cannot link a netdevsim to itself
[  492.147713] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).