[  456.730809] netdevsim netdevsim319 eni319np1: renamed from eth0
[  456.733701] netdevsim netdevsim741 eni741np1: renamed from eth1
[  456.830190] Could not find device with ifindex 2000 in netnsfd 11
[  456.830329] Could not find netns with fd: 2000
[  456.830392] Cannot link a netdevsim to itself
[  456.830469] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).