[  484.447068] netdevsim netdevsim321 eni321np1: renamed from eth0
[  484.549294] netdevsim netdevsim529 eni529np1: renamed from eth1
[  484.914030] Could not find device with ifindex 2000 in netnsfd 11
[  484.914189] Could not find netns with fd: 2000
[  484.914267] Cannot link a netdevsim to itself
[  484.914359] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).