[  488.028112] netdevsim netdevsim321 eni321np1: renamed from eth0
[  488.028436] netdevsim netdevsim563 eni563np1: renamed from eth1
[  488.118095] Could not find device with ifindex 2000 in netnsfd 11
[  488.118197] Could not find netns with fd: 2000
[  488.118242] Cannot link a netdevsim to itself
[  488.118294] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).