[  486.828817] netdevsim netdevsim615 eni615np1: renamed from eth1
[  486.924218] netdevsim netdevsim499 eni499np1: renamed from eth0
[  487.123027] Could not find device with ifindex 2000 in netnsfd 11
[  487.123316] Could not find netns with fd: 2000
[  487.123389] Cannot link a netdevsim to itself
[  487.123488] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).