[  510.834656] netdevsim netdevsim345 eni345np1: renamed from eth0
[  510.932625] netdevsim netdevsim620 eni620np1: renamed from eth1
[  511.133661] Could not find device with ifindex 2000 in netnsfd 11
[  511.133804] Could not find netns with fd: 2000
[  511.133875] Cannot link a netdevsim to itself
[  511.133961] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).