[  836.861627][T15821] netdevsim netdevsim510 eni510np1: renamed from eth0
[  836.872692][T15824] netdevsim netdevsim529 eni529np1: renamed from eth1
[  837.523804][T15810] Could not find device with ifindex 2000 in netnsfd 11
[  837.524471][T15810] Could not find netns with fd: 2000
[  837.524993][T15810] Cannot link a netdevsim to itself
[  837.525507][T15810] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).