[  473.706449] netdevsim netdevsim399 eni399np1: renamed from eth0
[  473.707363] netdevsim netdevsim733 eni733np1: renamed from eth0
[  473.783969] Could not find device with ifindex 2000 in netnsfd 11
[  473.784049] Could not find netns with fd: 2000
[  473.784091] Cannot link a netdevsim to itself
[  473.784142] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).