[ 1305.205094][T12059] netdevsim netdevsim493 eni493np1: renamed from eth0 [ 1305.246031][T12061] netdevsim netdevsim533 eni533np1: renamed from eth1 [ 1308.967178][T12051] Could not find device with ifindex 2000 in netnsfd 11 [ 1308.973033][T12051] Could not find netns with fd: 2000 [ 1308.973807][T12051] Cannot link a netdevsim to itself [ 1308.974635][T12051] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).