[  836.001124][T15640] netdevsim netdevsim301 eni301np1: renamed from eth0
[  836.031154][T15639] netdevsim netdevsim680 eni680np1: renamed from eth1
[  836.670155][T15628] Could not find device with ifindex 2000 in netnsfd 11
[  836.670717][T15628] Could not find netns with fd: 2000
[  836.671110][T15628] Cannot link a netdevsim to itself
[  836.671536][T15628] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).