[  488.423926] netdevsim netdevsim541 eni541np1: renamed from eth1
[  488.519580] netdevsim netdevsim399 eni399np1: renamed from eth0
[  488.769536] Could not find device with ifindex 2000 in netnsfd 11
[  488.769897] Could not find netns with fd: 2000
[  488.770012] Cannot link a netdevsim to itself
[  488.770165] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).