[  521.478644] netdevsim netdevsim336 eni336np1: renamed from eth0
[  521.575978] netdevsim netdevsim748 eni748np1: renamed from eth1
[  521.822762] Could not find device with ifindex 2000 in netnsfd 11
[  521.822937] Could not find netns with fd: 2000
[  521.823020] Cannot link a netdevsim to itself
[  521.823106] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).