[  842.619150][T14803] netdevsim netdevsim317 eni317np1: renamed from eth0
[  842.639264][T14805] netdevsim netdevsim637 eni637np1: renamed from eth1
[  843.473433][T14791] Could not find device with ifindex 2000 in netnsfd 11
[  843.474250][T14791] Could not find netns with fd: 2000
[  843.474661][T14791] Cannot link a netdevsim to itself
[  843.475112][T14791] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).