[  472.661939] netdevsim netdevsim487 eni487np1: renamed from eth0
[  472.662380] netdevsim netdevsim749 eni749np1: renamed from eth1
[  472.744321] Could not find device with ifindex 2000 in netnsfd 11
[  472.744462] Could not find netns with fd: 2000
[  472.744575] Cannot link a netdevsim to itself
[  472.744695] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).