[  455.007685] netdevsim netdevsim490 eni490np1: renamed from eth0
[  455.008760] netdevsim netdevsim667 eni667np1: renamed from eth1
[  455.100604] Could not find device with ifindex 2000 in netnsfd 11
[  455.100710] Could not find netns with fd: 2000
[  455.100755] Cannot link a netdevsim to itself
[  455.100805] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).