[  521.517434] netdevsim netdevsim274 eni274np1: renamed from eth0
[  521.614759] netdevsim netdevsim757 eni757np1: renamed from eth1
[  521.840891] Could not find device with ifindex 2000 in netnsfd 11
[  521.841105] Could not find netns with fd: 2000
[  521.841222] Cannot link a netdevsim to itself
[  521.841329] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).