[  521.831313] netdevsim netdevsim300 eni300np1: renamed from eth0
[  521.929013] netdevsim netdevsim548 eni548np1: renamed from eth1
[  522.171930] Could not find device with ifindex 2000 in netnsfd 11
[  522.172096] Could not find netns with fd: 2000
[  522.172192] Cannot link a netdevsim to itself
[  522.172280] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).