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