[  508.232217] netdevsim netdevsim731 eni731np1: renamed from eth1
[  508.330098] netdevsim netdevsim481 eni481np1: renamed from eth0
[  508.528550] Could not find device with ifindex 2000 in netnsfd 11
[  508.528721] Could not find netns with fd: 2000
[  508.528816] Cannot link a netdevsim to itself
[  508.528921] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).