[  486.427850] netdevsim netdevsim504 eni504np1: renamed from eth0
[  486.428187] netdevsim netdevsim696 eni696np1: renamed from eth1
[  486.522990] Could not find device with ifindex 2000 in netnsfd 11
[  486.523086] Could not find netns with fd: 2000
[  486.523133] Cannot link a netdevsim to itself
[  486.523186] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).