[  518.003503] netdevsim netdevsim603 eni603np1: renamed from eth1
[  518.100804] netdevsim netdevsim398 eni398np1: renamed from eth0
[  518.337249] Could not find device with ifindex 2000 in netnsfd 11
[  518.337449] Could not find netns with fd: 2000
[  518.337524] Cannot link a netdevsim to itself
[  518.337613] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).