[  514.493169] netdevsim netdevsim749 eni749np1: renamed from eth1
[  514.590907] netdevsim netdevsim501 eni501np1: renamed from eth0
[  514.835773] Could not find device with ifindex 2000 in netnsfd 11
[  514.836013] Could not find netns with fd: 2000
[  514.836118] Cannot link a netdevsim to itself
[  514.836239] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).