[  475.334509] netdevsim netdevsim506 eni506np1: renamed from eth0
[  475.335198] netdevsim netdevsim631 eni631np1: renamed from eth1
[  475.423581] Could not find device with ifindex 2000 in netnsfd 11
[  475.423667] Could not find netns with fd: 2000
[  475.423709] Cannot link a netdevsim to itself
[  475.423758] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).