[ 1240.785325][T11133] netdevsim netdevsim764 eni764np1: renamed from eth1 [ 1240.892185][T11134] netdevsim netdevsim336 eni336np1: renamed from eth0 [ 1244.213546][T11126] Could not find device with ifindex 2000 in netnsfd 11 [ 1244.214578][T11126] Could not find netns with fd: 2000 [ 1244.215442][T11126] Cannot link a netdevsim to itself [ 1244.216505][T11126] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).