[  519.952439] netdevsim netdevsim408 eni408np1: renamed from eth0
[  520.049108] netdevsim netdevsim624 eni624np1: renamed from eth1
[  520.293632] Could not find device with ifindex 2000 in netnsfd 11
[  520.293852] Could not find netns with fd: 2000
[  520.293948] Cannot link a netdevsim to itself
[  520.294071] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).