[  520.706977] netdevsim netdevsim515 eni515np1: renamed from eth1
[  520.804422] netdevsim netdevsim368 eni368np1: renamed from eth0
[  521.058182] Could not find device with ifindex 2000 in netnsfd 11
[  521.058407] Could not find netns with fd: 2000
[  521.058507] Cannot link a netdevsim to itself
[  521.058635] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).