[  512.997896] netdevsim netdevsim481 eni481np1: renamed from eth0
[  513.096077] netdevsim netdevsim578 eni578np1: renamed from eth1
[  513.321722] Could not find device with ifindex 2000 in netnsfd 11
[  513.321899] Could not find netns with fd: 2000
[  513.321973] Cannot link a netdevsim to itself
[  513.322060] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).