[  838.053085][T15797] netdevsim netdevsim510 eni510np1: renamed from eth0
[  838.060427][T15800] netdevsim netdevsim659 eni659np1: renamed from eth1
[  838.709108][T15786] Could not find device with ifindex 2000 in netnsfd 11
[  838.709829][T15786] Could not find netns with fd: 2000
[  838.710328][T15786] Cannot link a netdevsim to itself
[  838.715839][T15786] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).