[FEAT] Enable IPv4 and IPv6 forwarding

[GarrisonD]

That would be cool to have the role enabling IP forwarding as described in Enable IP forwarding

Here is how I do it now in the playbook just before the tailscale role:

---
- name: Enable IPv4 forwarding
  ansible.posix.sysctl: { name: net.ipv4.ip_forward, value: 1 }

- name: Enable IPv6 forwarding
  ansible.posix.sysctl: { name: net.ipv6.conf.all.forwarding, value: 1 }

I understand that not everybody would need/want to have it by default. Can be put behind some option.

[qurm]

I too would find this useful - it is part of my tailscale playbook.