[  456.621603] netdevsim netdevsim409 eni409np1: renamed from eth0
[  456.622117] netdevsim netdevsim635 eni635np1: renamed from eth1
[  456.715565] Could not find device with ifindex 2000 in netnsfd 11
[  456.715663] Could not find netns with fd: 2000
[  456.715716] Cannot link a netdevsim to itself
[  456.715763] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).