## Documentation request

GTP-U module version was outdated and docs lacked a way to help resetting iptables rules

## Suggestion

Update the version and add an new troubleshooting entry

## Additional context

I've tested both suggested modifications on latest v3.3.0 stable release and they work.

PRs already made on the docs repository
[Docs] Update gtp5g version and add iptables troubleshooting steps
This is a GitHub Issue
repo:free5gc
owner:free5gc
Title : [Docs] Update gtp5g version and add iptables troubleshooting steps
Issue date:

--- start body ---
## Documentation request

GTP-U module version was outdated and docs lacked a way to help resetting iptables rules

## Suggestion

Update the version and add an new troubleshooting entry

## Additional context

I've tested both suggested modifications on latest v3.3.0 stable release and they work.

PRs already made on the docs repository
--- end body ---
