The 169.254 addresses have been automatically assigned by the Sonos devices as they were unable to obtain an IP from the DHCP server.

have a look to make sure the DHCP scope has enough IPs available.

It may be quicker to turn off the power at fuse / distribution board to reboot them.

Sonos units will revert to AutoIP if a DHCP server can’t be found, but they should keep polling for one, so a DHCP that’s slow to restart ought to be discovered eventually. 

Hi,

For the Sonos SL speakers losing connection after power outages:

Assign static IPs within the DHCP range.
Increase DHCP lease time on the router.
Use network monitoring to identify issues.
Consider scheduled reboots during low-traffic times.
Best,

emmijackson

Suspiciously like a spam  response, especially given the failed link at the end. 

Already reported

i am not a spam. sorry for mistake at the end. i am deeply sorry for that.

Just out of curiosity, why did you respond with generic information to a two month old post?

I just joined the community. It was just a random post. In future I will be careful. again sorry for that.

Increasing lease time is often a help when you have DHCP issues as it reduces DHCP updates, BUT it can make Sonos issues more persistent as they keep the bad address data longer.

Far better to keep standard DHCP renew intervals and set the Sonos to static/reserved addresses.

Then if you must modify DHCP for other equipment it will not impact the Sonos operation.

The forum is a bit clunky but if you use the “Recent Posts” link it will keep you out of the really old stuff. Below the pictures.

Recently active  https://en.community.sonos.com/search/activity/recent