[  521.625088] netdevsim netdevsim684 eni684np1: renamed from eth1
[  521.722788] netdevsim netdevsim292 eni292np1: renamed from eth0
[  521.952093] Could not find device with ifindex 2000 in netnsfd 11
[  521.952309] Could not find netns with fd: 2000
[  521.952417] Cannot link a netdevsim to itself
[  521.952547] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).