I've been running a http://tinc-vpn.org VPN for about 3 years now and lately came to the decision to improve my setup.
One thing I came across was that all my scripts were using net-tools in their tinc-up and tinc-down scripts, meaning commands such as ifconfig etc..
As I enjoy working with iproute2 it was time for me to make the switch.
#!/bin/sh
# tinc-up
ip tuntap add dev $INTERFACE mode tun
ip addr add 10.0.0.1/24 dev $INTERFACE
ip link set $INTERFACE up
And of course:
#!/bin/sh
# tinc-down
ip link set $INTERFACE down
ip link delete dev $INTERFACE
And that's about it.