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Merge pull request #359 from pi-hole/non_gnu_awk_ip_lookup 

IPRoute v3 ip lookup
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Adam Hill 2018-10-31 20:14:29 -05:00 committed by GitHub
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README.md
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@ -22,7 +22,7 @@ A [Docker](https://www.docker.com/what-docker) project to make a lightweight x86
This container uses 2 popular ports, port 53 and port 80, so **may conflict with existing applications ports**. If you have no other services or docker containers using port 53/80 (if you do, keep reading below for a reverse proxy example), the minimum arguments required to run this container are in the script [docker_run.sh](https://github.com/pi-hole/docker-pi-hole/blob/master/docker_run.sh) or summarized here:
```bash
IP_LOOKUP="$(ip route get 8.8.8.8 | awk '{ print $NF; exit }')" # May not work for VPN / tun0
IP_LOOKUP="$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++) if ($i=="src") print $(i+1)}')" # May not work for VPN / tun0
IPv6_LOOKUP="$(ip -6 route get 2001:4860:4860::8888 | awk '{for(i=1;i<=NF;i++) if ($i=="src") print $(i+1)}')" # May not work for VPN / tun0
IP="${IP:-$IP_LOOKUP}" # use $IP, if set, otherwise IP_LOOKUP
IPv6="${IPv6:-$IPv6_LOOKUP}" # use $IPv6, if set, otherwise IP_LOOKUP

2
docker_run.sh
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@ -1,6 +1,6 @@
#!/bin/bash
# Lookups may not work for VPN / tun0
IP_LOOKUP="$(ip route get 8.8.8.8 | awk '{ print $NF; exit }')"
IP_LOOKUP="$(ip route get 8.8.8.8 | awk '{for(i=1;i<=NF;i++) if ($i=="src") print $(i+1)}')"
IPv6_LOOKUP="$(ip -6 route get 2001:4860:4860::8888 | awk '{for(i=1;i<=NF;i++) if ($i=="src") print $(i+1)}')"
# Just hard code these to your docker server's LAN IP if lookups aren't working