[  473.498483] netdevsim netdevsim305 eni305np1: renamed from eth0
[  473.499240] netdevsim netdevsim726 eni726np1: renamed from eth1
[  473.582400] Could not find device with ifindex 2000 in netnsfd 11
[  473.582486] Could not find netns with fd: 2000
[  473.582529] Cannot link a netdevsim to itself
[  473.582578] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).