[  487.192288] netdevsim netdevsim378 eni378np1: renamed from eth0
[  487.289299] netdevsim netdevsim561 eni561np1: renamed from eth1
[  487.502808] Could not find device with ifindex 2000 in netnsfd 11
[  487.503102] Could not find netns with fd: 2000
[  487.503191] Cannot link a netdevsim to itself
[  487.503292] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).