[  513.923435] netdevsim netdevsim580 eni580np1: renamed from eth1
[  514.021049] netdevsim netdevsim501 eni501np1: renamed from eth0
[  514.245083] Could not find device with ifindex 2000 in netnsfd 11
[  514.245301] Could not find netns with fd: 2000
[  514.245411] Cannot link a netdevsim to itself
[  514.245555] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).