[ 483.248199] netdevsim netdevsim684 eni684np1: renamed from eth1 [ 483.349265] netdevsim netdevsim441 eni441np1: renamed from eth0 [ 483.710956] Could not find device with ifindex 2000 in netnsfd 11 [ 483.711119] Could not find netns with fd: 2000 [ 483.711204] Cannot link a netdevsim to itself [ 483.711303] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).