[  520.027399] netdevsim netdevsim636 eni636np1: renamed from eth1
[  520.125118] netdevsim netdevsim407 eni407np1: renamed from eth0
[  520.340556] Could not find device with ifindex 2000 in netnsfd 11
[  520.340710] Could not find netns with fd: 2000
[  520.340783] Cannot link a netdevsim to itself
[  520.340872] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).