[  522.979867] netdevsim netdevsim619 eni619np1: renamed from eth1
[  523.077927] netdevsim netdevsim477 eni477np1: renamed from eth0
[  523.304879] Could not find device with ifindex 2000 in netnsfd 11
[  523.305097] Could not find netns with fd: 2000
[  523.305193] Cannot link a netdevsim to itself
[  523.305312] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).