[  522.765001] netdevsim netdevsim450 eni450np1: renamed from eth0
[  522.862695] netdevsim netdevsim748 eni748np1: renamed from eth1
[  523.104122] Could not find device with ifindex 2000 in netnsfd 11
[  523.104317] Could not find netns with fd: 2000
[  523.104418] Cannot link a netdevsim to itself
[  523.104553] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).