[  486.900227] netdevsim netdevsim444 eni444np1: renamed from eth0
[  486.900584] netdevsim netdevsim744 eni744np1: renamed from eth1
[  486.998401] Could not find device with ifindex 2000 in netnsfd 11
[  486.998556] Could not find netns with fd: 2000
[  486.998662] Cannot link a netdevsim to itself
[  486.998779] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).