[ 1028.150119][T12585] netdevsim netdevsim446 eni446np1: renamed from eth0 [ 1028.168970][T12651] netdevsim netdevsim628 eni628np1: renamed from eth1 [ 1030.035806][T12731] Could not find device with ifindex 2000 in netnsfd 11 [ 1030.036884][T12731] Could not find netns with fd: 2000 [ 1030.037559][T12731] Cannot link a netdevsim to itself [ 1030.044661][T12731] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).