[  437.369426] netdevsim netdevsim305 eni305np1: renamed from eth0
[  437.469891] netdevsim netdevsim678 eni678np1: renamed from eth1
[  437.844301] Could not find device with ifindex 2000 in netnsfd 11
[  437.844462] Could not find netns with fd: 2000
[  437.844547] Cannot link a netdevsim to itself
[  437.844662] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).