1 #!/bin/bash 2 3 # IP (IPv6) suffix for your local machine (the prefix will be 4 # automatically determined by your IP address) 5 LOCAL_V6_ADDR="::1" 6 7 # # Specify other network cards to assign IP (IPv6) addresses to 8 # # (they will get a /64 size prefix) 9 # V6NET[0]=eth1 10 # V6NET[1]=eth2 11 12 # Enable verbose messages about the 6to4 configuration 13 VERBOSE=1 14 15 # Enable this to enable a double check of your IP from a 16 # remote host, used if you are behind a NAT. 17 CHECKIP=0 18 19 # # Specify a relay, if none-specified, the automatic one will 20 # # be used. 21 # RELAY=128.107.240.254 22 23 # # Bypass automatic configuration of the interface: 24 # # (note: Both or none should be set.) 25 # LOCALIF=eth0 26 # LOCAL4=1.2.3.4 27 28 29 ###################################################################### 30 # The script begins. 31 ###################################################################### 32 MAGIC="This line automatically added by ipv6" 33 PATH="/sbin:usr/sbin:/usr/bin:/bin:/usr/local/v6/sbin:/usr/local/v6/bin:${PATH}" 34 export PATH 35 if [ \( -z "${VERBOSE}" -o "${VERBOSE}" = 0 \) -a "$1" = "start" ]; then 36 $0 forked $1 & 37 exit 0 38 fi 39 if [ "$1" = "forked" ]; then 40 shift 41 fi 42 43 44 case "$1" in 45 start) 46 if [ "${CHECKIP}" = "1" ]; then 47 echo "217.160.252.81 www.rkeene.org # ${MAGIC}" >> /etc/hosts 48 fi 49 while true; do 50 if [ -z "$LOCAL4" ]; then 51 if [ -z "$LOCAL_IF" ]; then 52 LOCAL_IF=$(route -n | grep '^0\.0\.0\.0 ' | sed -e s/'^.* '// ) 53 fi 54 LOCAL4=$(ifconfig ${LOCAL_IF} | grep "^ *inet addr:" | sed s/'^ *inet addr:\([0-9.]\+\).*'/'\1'/g ) 55 if [ "${CHECKIP}" = "1" ]; then 56 LOCAL4_ALT=`lynx -dump http://www.rkeene.org/whatismyip/ | sed 's@^ *Your IP:@@g;t x;d;:x'` 57 if [ ! "${LOCAL4}" = "${LOCAL4_ALT}" ]; then 58 if [ "${VERBOSE}" = "1" ]; then 59 echo "Warning: IPs conflict, local says: ${LOCAL4}, remote says ${LOCAL4_ALT}" 60 fi 61 LOCAL4="${LOCAL4_ALT}" 62 fi 63 fi 64 if [ -z "$LOCAL4" ]; then 65 echo "Cannot find the IP assigned to $LOCAL_IF" 66 exit 1 67 fi 68 fi 69 if [ ! "${LOCAL4}" = "127.0.0.1" ]; then break; fi 70 sleep 10 71 done 72 if grep "# ${MAGIC}$" /etc/hosts >/dev/null; then 73 grep -v "# ${MAGIC}$" /etc/hosts > /etc/hosts.new 74 cat /etc/hosts.new > /etc/hosts 75 rm /etc/hosts.new 76 fi 77 78 LOCAL6=2002:$(printf "%x%02x:%x%02x" $(echo $LOCAL4 | sed -e 's/\./ /g')) 79 for ((i=0;i<${#V6NET[*]};i++)) { 80 LOCAL6NET[${i}]="${LOCAL6}:$[${i}+1]::1/64" 81 } 82 LOCAL6_IP=${LOCAL6}${LOCAL_V6_ADDR} 83 LOCAL6="${LOCAL6}${LOCAL_V6_ADDR}/48" 84 85 modprobe ipv6 2>/dev/null >/dev/null 86 87 if [ "${VERBOSE}" = "1" ]; then 88 echo "Starting IPv6 routing policies: ${LOCAL6} on sit0" 89 fi 90 91 echo 1 > /proc/sys/net/ipv6/conf/all/forwarding 92 93 [ "$RELAY" ] || RELAY=192.88.99.1 94 95 if [ "$VERBOSE" = "1" ]; then 96 echo "Local v4 address: $LOCAL4, ${LOCAL4_ALT}" 97 echo "Local v6 address: $LOCAL6" 98 echo "Local v6net addresses: ${LOCAL6NET[*]}" 99 echo "6to4 Relay address: $RELAY" 100 fi 101 ifconfig sit0 up 102 ifconfig sit0 add ${LOCAL6} 103 for ((i=0;i<${#V6NET[*]};i++)) { 104 ifconfig ${V6NET[${i}]} add ${LOCAL6NET[${i}]} 105 } 106 route -A inet6 add 2000::/3 gw ::$RELAY 107 108 if [ ! "${#V6NET[*]}" = "0" ]; then 109 rm /etc/radvd.conf 110 for ((i=0;i<${#V6NET[*]};i++)) { 111 cat <<EOF >> /etc/radvd.conf 112 interface ${V6NET[${i}]} { 113 AdvSendAdvert on; 114 prefix ${LOCAL6NET[${i}]} { 115 Base6to4Interface ${LOCAL_IF}; 116 AdvOnLink on; 117 AdvAutonomous on; 118 }; 119 }; 120 121 EOF 122 } 123 radvd 124 fi 125 echo -e "${LOCAL6_IP} `hostname` # ${MAGIC}" >> /etc/hosts 126 127 if [ "$VERBOSE" = "1" ]; then echo "Done!"; fi 128 ;; 129 stop) 130 echo 0 > /proc/sys/net/ipv6/conf/all/forwarding 131 ifconfig sit0 down 132 for ((i=0;i<${#V6NET[*]};i++)) { 133 IFACE=${V6NET[${i}]} 134 ADDRS=`ifconfig ${IFACE} | grep "^ *inet6 addr: .* Scope:Global" |awk '{ print $3 }'` 135 for addr in ${ADDRS}; do 136 ifconfig ${IFACE} del ${addr} 137 done 138 } 139 killall radvd 2>/dev/null 140 if grep "# ${MAGIC}$" /etc/hosts >/dev/null; then 141 grep -v "# ${MAGIC}$" /etc/hosts > /etc/hosts.new 142 cat /etc/hosts.new > /etc/hosts 143 rm /etc/hosts.new 144 fi 145 rmmod ipv6 146 ;; 147 *) 148 echo "Usage: $0 {start|stop}" 149 exit 1 150 ;; 151 esac 152 153 exit 0 ipv6.sh est mon manuscrit d'init de la configuration "6to4". |