[  474.302158] netdevsim netdevsim750 eni750np1: renamed from eth1
[  474.305387] netdevsim netdevsim283 eni283np1: renamed from eth0
[  474.394707] Could not find device with ifindex 2000 in netnsfd 11
[  474.394814] Could not find netns with fd: 2000
[  474.394861] Cannot link a netdevsim to itself
[  474.394913] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).