These scripts configure a DS-Lite Linux server as an AFTR relay.
Make sure that the script is executable:
chmod a+x ./dslite-serverThe script reads its configuration from /etc/default/dslite-server. Inside this file, both the LOCAL_HOST, which will resolve to the machine's public IP, and the REMOTE_HOST, which will be resolve to the remote client's public IP, need to be specified. This is necessary as the AFTR tunnel needs to have the IPs for both the local and the remote host. You can override the remote lookup by setting a value to REMOTE_ADDR.
By the RFC, the server will always have the IP 192.0.0.1 and the network will always be 192.0.0.0/29. These are the values used by default, but they can be changed by tweaking the values at TUN_IP4 and TUN_NET.
The tunnel interface will be named ip6tun0 by default, but it can be adjusted by changing TUN_IFACE.
The WAN interface will by default be named eth0, but it can be adjusted by changing WAN_IFACE.
The MTU will be assumed to be 1280 by default, but it can be adjusted by changing MTU.
This is a sample of a default /etc/default/dslite-server configuration tweaking only values required for this specific connection:
LOCAL_HOST=aftr.myservers.example
REMOTE_HOST=home.myservers.example
TUN_IFACE=ip4tun0
WAN_IFACE=ens5The script supports two actions: start and stop. The script needs to be run either as root or with sudo, as it uses privileged system binaries.