[  457.877140] netdevsim netdevsim321 eni321np1: renamed from eth0
[  457.877754] netdevsim netdevsim682 eni682np1: renamed from eth1
[  457.982754] Could not find device with ifindex 2000 in netnsfd 11
[  457.982861] Could not find netns with fd: 2000
[  457.982904] Cannot link a netdevsim to itself
[  457.982954] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).