[  522.754990] netdevsim netdevsim516 eni516np1: renamed from eth1
[  522.852466] netdevsim netdevsim416 eni416np1: renamed from eth0
[  523.086644] Could not find device with ifindex 2000 in netnsfd 11
[  523.086833] Could not find netns with fd: 2000
[  523.086917] Cannot link a netdevsim to itself
[  523.087008] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).