[  483.680602] netdevsim netdevsim450 eni450np1: renamed from eth0
[  483.681158] netdevsim netdevsim516 eni516np1: renamed from eth1
[  483.776815] Could not find device with ifindex 2000 in netnsfd 11
[  483.776912] Could not find netns with fd: 2000
[  483.776956] Cannot link a netdevsim to itself
[  483.777008] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).