[  461.670916] netdevsim netdevsim396 eni396np1: renamed from eth0
[  461.673832] netdevsim netdevsim637 eni637np1: renamed from eth1
[  461.760465] Could not find device with ifindex 2000 in netnsfd 11
[  461.760575] Could not find netns with fd: 2000
[  461.760621] Cannot link a netdevsim to itself
[  461.760684] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).