[  478.250852] netdevsim netdevsim757 eni757np1: renamed from eth1
[  478.251214] netdevsim netdevsim447 eni447np1: renamed from eth0
[  478.349902] Could not find device with ifindex 2000 in netnsfd 11
[  478.349983] Could not find netns with fd: 2000
[  478.350025] Cannot link a netdevsim to itself
[  478.350066] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).