[  517.099791] netdevsim netdevsim337 eni337np1: renamed from eth0
[  517.197790] netdevsim netdevsim730 eni730np1: renamed from eth1
[  517.410228] Could not find device with ifindex 2000 in netnsfd 11
[  517.410434] Could not find netns with fd: 2000
[  517.410512] Cannot link a netdevsim to itself
[  517.410606] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).