tubular

The control plane for BPF socket lookup. Steers traffic that arrives via the tubes of the Internet to processes running on the machine. Its much more flexible than traditional BSD bind semantics:

• You can bind to all ports on an IP
• You can bind to a subnet instead of an IP
• You can bind to all ports on a subnet

Testing

tubular requires some bleeding edge Linux features and provides a script that automatically fetches an appropriate kernel:

$ ./run-tests.sh

You will need QEMU and virtme installed, and probably be on the VPN.