[  520.694583] netdevsim netdevsim563 eni563np1: renamed from eth1
[  520.792007] netdevsim netdevsim451 eni451np1: renamed from eth0
[  521.012224] Could not find device with ifindex 2000 in netnsfd 11
[  521.012413] Could not find netns with fd: 2000
[  521.012512] Cannot link a netdevsim to itself
[  521.012621] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).