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sliptty/start_network.sh: configure global address for SLIP interface

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This way hosts without pre-configured IPv6 addresses can also reach
global addresses within a downstream network.
This commit is contained in:
Martine S. Lenders 2020-03-06 11:42:32 +01:00
parent 45ef9f9fe7
commit d43ff6df12
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GPG Key ID: CCD317364F63286F
1 changed files with 15 additions and 2 deletions
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17
dist/tools/sliptty/start_network.sh vendored
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@ -3,6 +3,7 @@
SLIPTTY_DIR="$(cd "$(dirname "$0")" && pwd -P)"
UHCPD="$(cd "${SLIPTTY_DIR}/../uhcpd/bin" && pwd -P)/uhcpd"
TUN=sl0
TUN_GLB="fdea:dbee:f::1/64"
UHCPD_PID=
CREATED_IFACE=0
@ -39,6 +40,7 @@ create_tun() {
${SUDO} sysctl -w net.ipv6.conf.${TUN}.accept_ra=2
${SUDO} ip link set ${TUN} up || exit 1
${SUDO} ip address add fe80::1/64 dev ${TUN}
${SUDO} ip address add ${TUN_GLB} dev ${TUN}
${SUDO} ip neigh add fe80::2 dev ${TUN}
${SUDO} ip route add ${PREFIX} via fe80::2 dev ${TUN}
;;
@ -55,6 +57,16 @@ create_tun() {
read _
${SUDO} ifconfig ${TUN} up || exit 1
${SUDO} ifconfig ${TUN} inet6 fe80::1 prefixlen 64
TUN_GLB_ADDR=$(echo "${TUN_GLB}" | cut -d/ -f1)
TUN_GLB_LEN=$(echo "${TUN_GLB}" | cut -d/ -f2)
if [ -z "${TUN_GLB_ADDR}" ] || [ -z "${TUN_GLB_LEN}" ]; then
echo "TUN global address (-g) must be of format " \
"<addr>/<prefix_len>" >&2
exit 1
fi
${SUDO} ifconfig ${TUN} inet6 fe80::1 prefixlen 64
${SUDO} ifconfig ${TUN} inet6 ${TUN_GLB_ADDR} prefixlen \
${TUN_GLB_LEN}
${SUDO} route -n add -interface ${TUN} -inet6 -prefixlen 64 \
${PREFIX} fe80::2 || exit 1
;;
@ -89,8 +101,8 @@ start_uhcpd() {
}
usage() {
echo "usage: $1 [-I <sl0>] [-e] <prefix> serial [baudrate]"
echo "usage: $1 [-I <sl0>] [-e] <prefix> tcp:host [port]"
echo "usage: $1 [-I <sl0>] [-e] [-g <addr>/<prefix_len>] <prefix> serial [baudrate]"
echo "usage: $1 [-I <sl0>] [-e] [-g <addr>/<prefix_len>] <prefix> tcp:host [port]"
}
trap "cleanup" INT QUIT TERM EXIT
@ -101,6 +113,7 @@ while getopts ehI: opt; do
case ${opt} in
e) SLIP_ONLY=1; shift 1;;
I) TUN=${OPTARG}; shift 2;;
g) TUN_GLB=${OPTARG}; shift 2;;
h) usage $0; exit 0;;
esac
done