[  488.739499] netdevsim netdevsim449 eni449np1: renamed from eth0
[  488.740177] netdevsim netdevsim571 eni571np1: renamed from eth0
[  488.821740] Could not find device with ifindex 2000 in netnsfd 11
[  488.821841] Could not find netns with fd: 2000
[  488.821886] Cannot link a netdevsim to itself
[  488.821939] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).