[  820.432447][T15835] netdevsim netdevsim511 eni511np1: renamed from eth0
[  820.438929][T15837] netdevsim netdevsim724 eni724np1: renamed from eth1
[  821.077148][T15824] Could not find device with ifindex 2000 in netnsfd 11
[  821.077947][T15824] Could not find netns with fd: 2000
[  821.078529][T15824] Cannot link a netdevsim to itself
[  821.079194][T15824] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).