2022-12-22 17:25:05 +01:00
|
|
|
#!/bin/sh
|
|
|
|
|
# Transit A with alpine
|
|
|
|
|
set -e
|
2022-12-23 14:32:08 +01:00
|
|
|
if [ -z $SNSTERGUARD ] ; then exit 1; fi
|
2022-12-22 17:25:05 +01:00
|
|
|
DIR=`dirname $0`
|
|
|
|
|
cd `dirname $0`
|
|
|
|
|
|
|
|
|
|
echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories
|
|
|
|
|
apk update
|
|
|
|
|
apk add bird iptables
|
|
|
|
|
rc-update add bird
|
|
|
|
|
|
|
|
|
|
# echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
|
|
|
|
|
echo -e '#!/bin/sh\niptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE' > /etc/local.d/iptables.start
|
|
|
|
|
chmod +x /etc/local.d/iptables.start
|
|
|
|
|
rc-update add local
|
|
|
|
|
|
|
|
|
|
# keep DHCP on eth0
|
|
|
|
|
touch /etc/network/keepdhcp
|
|
|
|
|
|
|
|
|
|
# Force lxc bridged interface metric (else, it grows to 200+interface_index, which can be large with successive stop/start)
|
|
|
|
|
# This metric must be lower than the one exported by BGP for the default route (static part below)
|
|
|
|
|
mkdir /etc/udhcpc
|
|
|
|
|
echo "IF_METRIC=200" > /etc/udhcpc/udhcpc.conf
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# customize bird config (BGP)
|
|
|
|
|
sed -i "s/protocol kernel {/protocol kernel { metric 2000;/" /etc/bird.conf
|
|
|
|
|
# sed -i "s/\#.*export all/\texport all/" /etc/bird/bird.conf
|
|
|
|
|
echo -e "
|
|
|
|
|
protocol static {
|
|
|
|
|
ipv4;
|
|
|
|
|
route 0.0.0.0/0 via 100.64.0.1;
|
|
|
|
|
}
|
|
|
|
|
" >> /etc/bird.conf
|
2023-02-03 16:57:49 +01:00
|
|
|
|
|
|
|
|
|
|
|
|
|
# Add dnsmasq for external dns
|
|
|
|
|
apk add dnsmasq
|
|
|
|
|
rc-update add dnsmasq
|
