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docs: updated install page to remark on solutions for the common issue a user may run into when docker is installed

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Blake Harnden 2023-02-03 16:45:47 -08:00
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docs/install.md
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@ -283,6 +283,25 @@ inv install-emane -e <version tag>
## Post Install
After installation completes you are now ready to run CORE.
### Resolving Docker Issues
If you have Docker installed, by default it will change the iptables
forwarding chain to drop packets, which will cause issues for CORE traffic.
You can temporarily resolve the issue with the following command:
```shell
sudo iptables --policy FORWARD ACCEPT
```
Alternatively, you can configure Docker to avoid doing this, but will likely
break normal Docker networking usage. Using the setting below will require
a restart.
Place the file contents below in **/etc/docker/docker.json**
```json
{
"iptables": false
}
```
### Resolving Path Issues
One problem running CORE you may run into, using the virtual environment or locally
can be issues related to your path.