[  474.696511] netdevsim netdevsim612 eni612np1: renamed from eth1
[  474.696721] netdevsim netdevsim339 eni339np1: renamed from eth0
[  474.773067] Could not find device with ifindex 2000 in netnsfd 11
[  474.773149] Could not find netns with fd: 2000
[  474.773197] Cannot link a netdevsim to itself
[  474.773250] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).