[  522.825244] netdevsim netdevsim636 eni636np1: renamed from eth1
[  522.921331] netdevsim netdevsim490 eni490np1: renamed from eth0
[  523.196645] Could not find device with ifindex 2000 in netnsfd 11
[  523.196799] Could not find netns with fd: 2000
[  523.196875] Cannot link a netdevsim to itself
[  523.196994] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).