[  520.826567] netdevsim netdevsim538 eni538np1: renamed from eth1
[  520.923661] netdevsim netdevsim378 eni378np1: renamed from eth0
[  521.152739] Could not find device with ifindex 2000 in netnsfd 11
[  521.152939] Could not find netns with fd: 2000
[  521.153051] Cannot link a netdevsim to itself
[  521.153165] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).