[  522.659851] netdevsim netdevsim398 eni398np1: renamed from eth0
[  522.757473] netdevsim netdevsim578 eni578np1: renamed from eth1
[  523.000460] Could not find device with ifindex 2000 in netnsfd 11
[  523.000654] Could not find netns with fd: 2000
[  523.000737] Cannot link a netdevsim to itself
[  523.000833] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).