[  554.021600] netdevsim netdevsim339 eni339np1: renamed from eth0
[  554.119157] netdevsim netdevsim696 eni696np1: renamed from eth1
[  554.293770] Could not find device with ifindex 2000 in netnsfd 11
[  554.293918] Could not find netns with fd: 2000
[  554.294006] Cannot link a netdevsim to itself
[  554.294093] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).