tiny-network-utilities

Minimalistic network server implementations to support VM network connectivity

tiny-dhcp-server

Simple DHCP server for FreeBSD

What is tiny-dhcp-server?

This is the minimalistic DHCP server implementation for FreeBSD (has some OS-specific parts).

It responds to DHCP requests on several network interfaces, allocates the unique IP address to each client, and assigns itself as the default gateway and DNS.

What is it good for?

It is originally designed to be able to initialize the virtual machine network (tapN) when VM is connected to the host through the bridged interface.

Why tiny-dhcp-server is created?

Standard DHCP implementations suffer from excessive bloat. They require non-trivial configuration, maintenance, have thousands of lines of code. tiny-dhcp-server is minimal, doesn't require any configuration at all, and just runs.

Requirements

• FreeBSD (tested on 10.1)
• Python 3 installed (tested with python34-3.4.3)
• net/py-netifaces package installed for Python 3 (ex: py34-netifaces-0.10.3)

How do I run it?

Install it into your FreeBSD system by copying files and installing Python3:

cp tiny-dhcp-server.py /usr/local/bin/tiny-dhcp-server
cp tiny-dhcp-server /usr/local/etc/rc.d/
pkg install --automatic --no-repo-update python34
(cd /usr/ports/net/py-netifaces && PYTHON_VERSION=3.4 make install clean)

and enable it in your /etc/rc.conf:

tiny_dhcp_server_enable="YES"
tiny_dhcp_server_ifaces="em0 tap1 re1"

Or run it as a standalone program:

tiny-dhcp-server.py em0 tap1 re1

tiny-dhcp-server expects interfaces to be up and initialized with an IP address.

tiny-udp-proxy

Simple UDP proxy for FreeBSD