We have recently setup a 3 way VPN. one HQ and 2 Branches. 2 sites are configured with NBN and fibre 400. One site is with ADSL2+. IPsec VPN between NBN site and Fibre400 is working fine. But, the ADSL2+ site is showing that the VPN is configured and online but, not able to ping any IP either way. Any idea why?