Last night the internet died...
The morning when I woke up it was still down, so called my ISP and reported the issue.
The UTM's wan interface was down, although the ADSL router (bridged) showed as synchronised
Had the day off, so we all went for a swim. While I was in the beach my ISP's technical support called me and told me that they see no issue with the line and suggested the classic router reboot etc.
After explaining the network scheme they suggested I tried a different router and see if it works.
The afternoon I plugged a different router in a different phone plug, set the PPPoE settings and the internet was working normally.
Changed it to bridge, plugged an Ethernet cable to the UTM's wan interface and still nothing... Down and no internet...
I ended up turning it off altogether and changing my access point back in router mode until I find some time to troubleshoot ...
Does anyone have any idea regarding this?
tl;dr
The adsl routers work just fine, switching to bridge the broadband LED is on, but the Wan interface on the UTM is always down ( been working flawlessly for over a year this way)
Any ideas welcome...