[  488.330373] netdevsim netdevsim681 eni681np1: renamed from eth1
[  488.430895] netdevsim netdevsim425 eni425np1: renamed from eth0
[  488.791984] Could not find device with ifindex 2000 in netnsfd 11
[  488.792136] Could not find netns with fd: 2000
[  488.792216] Cannot link a netdevsim to itself
[  488.792318] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).