[  473.435387] netdevsim netdevsim442 eni442np1: renamed from eth0
[  473.435861] netdevsim netdevsim661 eni661np1: renamed from eth1
[  473.516418] Could not find device with ifindex 2000 in netnsfd 11
[  473.516543] Could not find netns with fd: 2000
[  473.516641] Cannot link a netdevsim to itself
[  473.516754] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).