[  838.662956][T15674] netdevsim netdevsim257 eni257np1: renamed from eth0
[  838.677036][T15673] netdevsim netdevsim598 eni598np1: renamed from eth1
[  839.418451][T15661] Could not find device with ifindex 2000 in netnsfd 11
[  839.419133][T15661] Could not find netns with fd: 2000
[  839.420002][T15661] Cannot link a netdevsim to itself
[  839.420534][T15661] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).