[  487.958090] netdevsim netdevsim267 eni267np1: renamed from eth0
[  487.959471] netdevsim netdevsim655 eni655np1: renamed from eth0
[  488.046727] Could not find device with ifindex 2000 in netnsfd 11
[  488.046793] Could not find netns with fd: 2000
[  488.046828] Cannot link a netdevsim to itself
[  488.046876] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).