[ 1233.896242][T11136] netdevsim netdevsim734 eni734np1: renamed from eth1 [ 1233.914184][T11137] netdevsim netdevsim429 eni429np1: renamed from eth0 [ 1237.204422][T11129] Could not find device with ifindex 2000 in netnsfd 11 [ 1237.205126][T11129] Could not find netns with fd: 2000 [ 1237.205673][T11129] Cannot link a netdevsim to itself [ 1237.206436][T11129] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).