[  456.557937] netdevsim netdevsim405 eni405np1: renamed from eth0
[  456.558512] netdevsim netdevsim656 eni656np1: renamed from eth1
[  456.655929] Could not find device with ifindex 2000 in netnsfd 11
[  456.656082] Could not find netns with fd: 2000
[  456.656189] Cannot link a netdevsim to itself
[  456.656306] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).