[  488.605730] netdevsim netdevsim617 eni617np1: renamed from eth1
[  488.703092] netdevsim netdevsim507 eni507np1: renamed from eth0
[  488.954482] Could not find device with ifindex 2000 in netnsfd 11
[  488.954886] Could not find netns with fd: 2000
[  488.954989] Cannot link a netdevsim to itself
[  488.955111] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).