[  761.401093][T14574] netdevsim netdevsim315 eni315np1: renamed from eth0
[  761.421650][T14576] netdevsim netdevsim640 eni640np1: renamed from eth1
[  761.997893][T14562] Could not find device with ifindex 2000 in netnsfd 11
[  761.998434][T14562] Could not find netns with fd: 2000
[  761.998787][T14562] Cannot link a netdevsim to itself
[  761.999195][T14562] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).