The normal Debian installation instructions are good, remember to use wheezy as DISTRIBUTION in sources.list:
http://he.fi/aprsc/INSTALLING.html
If you've installed aprsc by hand before, remember to remove it first. Make a backup copy of aprsc.conf, and "sudo dpkg --purge aprsc". If /opt/aprsc doesn't disappear completely, reboot and "sudo rm -rf /opt/aprsc".
Raspbian does not load IPv6 by default, and the default aprsc configs include dual-stack IPv4+IPv6 configuration (Listens on "::" - all IP addresses). You must load the IPv6 module to run aprsc with this default config:
sudo bash modprobe ipv6 echo ipv6 >> /etc/modules
The last command will make the ipv6 module load automatically after a reboot.
Yes, you need to do that even if you don't really have IPv6 on your network.
