[  835.781198][T15795] netdevsim netdevsim390 eni390np1: renamed from eth0
[  835.813272][T15798] netdevsim netdevsim545 eni545np1: renamed from eth1
[  836.555936][T15783] Could not find device with ifindex 2000 in netnsfd 11
[  836.556484][T15783] Could not find netns with fd: 2000
[  836.556843][T15783] Cannot link a netdevsim to itself
[  836.557254][T15783] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).