[  504.575880] netdevsim netdevsim494 eni494np1: renamed from eth0
[  504.576039] netdevsim netdevsim660 eni660np1: renamed from eth1
[  504.669220] Could not find device with ifindex 2000 in netnsfd 11
[  504.669344] Could not find netns with fd: 2000
[  504.669398] Cannot link a netdevsim to itself
[  504.669461] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).