Bluetooth tethering your iPhone to Ubuntu (works on multiple machines too)

1. Check out your iPhone bluetooth address

hcitool scan

2. Edit "/etc/default/bluetooth"

PAND_ENABLED=1
PAND_OPTIONS="--listen --role=PANU --devup /etc/bluetooth/pan/dev-up --devdown /etc/bluetooth/pan/dev-down"

3. Create directory "/etc/bluetooth/pan"

4. Create file "/etc/bluetooth/pan/dev-up"

#!/bin/bash
ifup bnep0

5. Create file "/etc/bluetooth/pan/dev-down"

#!/bin/bash
ifdown bnep0

6. Install pand & create PAN connection

sudo apt-get install bluez-compat
sudo pand -c IPHONE BLUETOOTH ADDRESS

7. Assign IP address to iPhone

sudo dhclient3 bnep0

8. To disconnect tethering

sudo pand -K

You can use the same method to tethering to multiple machines at the same time.