[  458.287296] netdevsim netdevsim458 eni458np1: renamed from eth0
[  458.288924] netdevsim netdevsim631 eni631np1: renamed from eth0
[  458.382227] Could not find device with ifindex 2000 in netnsfd 11
[  458.382331] Could not find netns with fd: 2000
[  458.382376] Cannot link a netdevsim to itself
[  458.382428] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).