[  455.910477] netdevsim netdevsim347 eni347np1: renamed from eth0
[  455.915054] netdevsim netdevsim623 eni623np1: renamed from eth1
[  456.000278] Could not find device with ifindex 2000 in netnsfd 11
[  456.000392] Could not find netns with fd: 2000
[  456.000439] Cannot link a netdevsim to itself
[  456.000491] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).