[  519.382355] netdevsim netdevsim323 eni323np1: renamed from eth0
[  519.479933] netdevsim netdevsim563 eni563np1: renamed from eth1
[  519.715354] Could not find device with ifindex 2000 in netnsfd 11
[  519.715538] Could not find netns with fd: 2000
[  519.715636] Cannot link a netdevsim to itself
[  519.715743] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).