[  473.404799] netdevsim netdevsim497 eni497np1: renamed from eth0
[  473.405141] netdevsim netdevsim763 eni763np1: renamed from eth1
[  473.489341] Could not find device with ifindex 2000 in netnsfd 11
[  473.489445] Could not find netns with fd: 2000
[  473.489495] Cannot link a netdevsim to itself
[  473.489544] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).