[  523.194792] netdevsim netdevsim678 eni678np1: renamed from eth1
[  523.291955] netdevsim netdevsim263 eni263np1: renamed from eth0
[  523.535939] Could not find device with ifindex 2000 in netnsfd 11
[  523.536124] Could not find netns with fd: 2000
[  523.536198] Cannot link a netdevsim to itself
[  523.536302] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).