[  488.229983] netdevsim netdevsim637 eni637np1: renamed from eth1
[  488.327178] netdevsim netdevsim364 eni364np1: renamed from eth0
[  488.536358] Could not find device with ifindex 2000 in netnsfd 11
[  488.536672] Could not find netns with fd: 2000
[  488.536760] Cannot link a netdevsim to itself
[  488.536857] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).