[  474.339720] netdevsim netdevsim454 eni454np1: renamed from eth0
[  474.340311] netdevsim netdevsim544 eni544np1: renamed from eth1
[  474.415129] Could not find device with ifindex 2000 in netnsfd 11
[  474.415234] Could not find netns with fd: 2000
[  474.415281] Cannot link a netdevsim to itself
[  474.415335] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).