[  491.531856] netdevsim netdevsim499 eni499np1: renamed from eth0
[  491.532562] netdevsim netdevsim740 eni740np1: renamed from eth1
[  491.627542] Could not find device with ifindex 2000 in netnsfd 11
[  491.627661] Could not find netns with fd: 2000
[  491.627713] Cannot link a netdevsim to itself
[  491.627783] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).