[  646.367419][ T9999] netdevsim netdevsim335 eni335np1: renamed from eth0
[  646.383493][ T9997] netdevsim netdevsim695 eni695np1: renamed from eth1
[  647.215644][ T9986] Could not find device with ifindex 2000 in netnsfd 11
[  647.216908][ T9986] Could not find netns with fd: 2000
[  647.217558][ T9986] Cannot link a netdevsim to itself
[  647.218154][ T9986] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).