[  514.836669] netdevsim netdevsim740 eni740np1: renamed from eth1
[  514.933441] netdevsim netdevsim307 eni307np1: renamed from eth0
[  515.169982] Could not find device with ifindex 2000 in netnsfd 11
[  515.170175] Could not find netns with fd: 2000
[  515.170268] Cannot link a netdevsim to itself
[  515.170379] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).