[  535.036771][ T6491] netdevsim netdevsim726 eni726np1: renamed from eth1
[  535.041549][ T6495] netdevsim netdevsim486 eni486np1: renamed from eth0
[  537.664577][ T6483] Could not find device with ifindex 2000 in netnsfd 11
[  537.665736][ T6483] Could not find netns with fd: 2000
[  537.666571][ T6483] Cannot link a netdevsim to itself
[  537.668455][ T6483] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).