[ 1029.896536][ T8143] netdevsim netdevsim696 eni696np1: renamed from eth1 [ 1029.986957][ T8145] netdevsim netdevsim443 eni443np1: renamed from eth0 [ 1033.228632][ T8136] Could not find device with ifindex 2000 in netnsfd 11 [ 1033.229753][ T8136] Could not find netns with fd: 2000 [ 1033.230833][ T8136] Cannot link a netdevsim to itself [ 1033.231922][ T8136] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).