Christmas tree or similar flashing decorations? Maybe a neighbour’s.
Nothing changed in our house and all of the immediately adjacent premises are holiday lets and not currently occupied - although that will change from about tomorrow!
However, I've been out all day and have just returned home. Going to the BQM graphs now shows a reversion to no packet loss since about 14:00 (bar 1 spike on the IPV6 graph which is not mirrored in the IPV4 graph).
Hopefully something local which has cleared itself and we are back to normal but thanks for the tip.
Edited by GonePostal (Sat 21-Dec-19 18:57:47)