[  474.236237] netdevsim netdevsim746 eni746np1: renamed from eth1
[  474.236530] netdevsim netdevsim397 eni397np1: renamed from eth0
[  474.330700] Could not find device with ifindex 2000 in netnsfd 11
[  474.330787] Could not find netns with fd: 2000
[  474.330835] Cannot link a netdevsim to itself
[  474.330889] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).