[  522.139688] netdevsim netdevsim649 eni649np1: renamed from eth1
[  522.236287] netdevsim netdevsim256 eni256np1: renamed from eth0
[  522.477506] Could not find device with ifindex 2000 in netnsfd 11
[  522.477712] Could not find netns with fd: 2000
[  522.477815] Cannot link a netdevsim to itself
[  522.477928] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).