[  490.624423] netdevsim netdevsim515 eni515np1: renamed from eth1
[  490.719953] netdevsim netdevsim487 eni487np1: renamed from eth0
[  490.919758] Could not find device with ifindex 2000 in netnsfd 11
[  490.919991] Could not find netns with fd: 2000
[  490.920075] Cannot link a netdevsim to itself
[  490.920161] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).