Manual ISATAP setup script for Tsinghua University. Tested and used under Arch Linux @ Raspberry Pi.

isatap.sh

#!/bin/sh
# Manual ISATAP setup script for Tsinghua University
# Tested and used under Arch Linux @ Raspberry Pi
V4_REMOTE="166.111.21.1"
V6_REMOTE="2402:f000:1:1501:200:5efe"
V6_LOCAL="fe80::200:5efe"
IFACE4=eth0
IFACE6=isatap
IPF=/run/isatap.ip4

case $1 in
    start)
        touch $IPF
        CURRENT_IP4=`ip addr show dev $IFACE4 | sed -e's/^.*inet \([^ ]*\)\/.*$/\1/;t;d'`
        PREVIOUS_IP4=`cat $IPF`
        if [ "$CURRENT_IP4" != "$PREVIOUS_IP4" ]; then
            ip tunnel add $IFACE6 mode sit remote $V4_REMOTE local $CURRENT_IP4 &&
            ifconfig $IFACE6 up &&
            ifconfig $IFACE6 add ${V6_LOCAL}:${CURRENT_IP4}/64 &&
            ifconfig $IFACE6 del fe80::${CURRENT_IP4}/64 &&
            ifconfig $IFACE6 add ${V6_REMOTE}:${CURRENT_IP4}/64 &&
            ip route add ::/0 via ${V6_REMOTE}:${V4_REMOTE} &&
            echo $CURRENT_IP4|tee $IPF
        fi
        ;;
    stop)
        ip tunnel del $IFACE6
        rm $IPF;;
    restart) $0 stop;$0 start;;
    *) echo "Usage: $0 {start|stop|restart}"
esac

Thanks! This solved my issues I was having with isatapd, not sure why yet though.

Glad that it helped :)