[  517.251863] netdevsim netdevsim661 eni661np1: renamed from eth1
[  517.348893] netdevsim netdevsim325 eni325np1: renamed from eth0
[  517.557911] Could not find device with ifindex 2000 in netnsfd 11
[  517.558096] Could not find netns with fd: 2000
[  517.558200] Cannot link a netdevsim to itself
[  517.558330] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).