[  514.119897] netdevsim netdevsim390 eni390np1: renamed from eth0
[  514.217534] netdevsim netdevsim662 eni662np1: renamed from eth1
[  514.390039] Could not find device with ifindex 2000 in netnsfd 11
[  514.390215] Could not find netns with fd: 2000
[  514.390299] Cannot link a netdevsim to itself
[  514.390395] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).