[  456.659988] netdevsim netdevsim414 eni414np1: renamed from eth0
[  456.661972] netdevsim netdevsim573 eni573np1: renamed from eth0
[  456.758446] Could not find device with ifindex 2000 in netnsfd 11
[  456.758532] Could not find netns with fd: 2000
[  456.758569] Cannot link a netdevsim to itself
[  456.758613] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).