After release of debian stretch: There is no public key available for the following key IDs: EF0F382A1A7B6500

root@donkey:~# apt update
Hit http://security.debian.org jessie/updates InRelease
Hit http://security.debian.org stretch/updates InRelease
Hit http://deb.leap.se jessie InRelease                                                                           
Hit http://security.debian.org jessie/updates/main amd64 Packages                                                 
Ign http://deb.debian.org jessie InRelease                                                  
Ign http://deb.debian.org stretch InRelease                                                                       
Get:1 http://deb.debian.org jessie-backports InRelease [166 kB]                                                   
Hit http://security.debian.org jessie/updates/main Translation-en                                                          
Hit http://security.debian.org stretch/updates/main amd64 Packages                                                         
Hit http://security.debian.org stretch/updates/main Translation-en                           
Hit http://deb.debian.org jessie Release.gpg                            
Hit http://deb.debian.org stretch Release.gpg                                                       
Hit http://deb.leap.se jessie/snapshots amd64 Packages                    
Hit http://deb.debian.org jessie Release                                                 
Hit http://deb.debian.org stretch Release                             
Hit http://deb.debian.org jessie-backports/main amd64 Packages        
Hit http://deb.debian.org jessie-backports/main Translation-en        
Hit http://deb.debian.org jessie/main amd64 Packages                 
Hit http://deb.debian.org jessie/main Translation-en                      
Hit http://deb.debian.org stretch/main amd64 Packages                     
Ign http://deb.leap.se jessie/snapshots Translation-en_US      
Hit http://deb.debian.org stretch/main Translation-en
Ign http://deb.leap.se jessie/snapshots Translation-en
Fetched 166 kB in 4s (41.5 kB/s)             
Reading package lists... 99%
Reading package lists... Done
Building dependency tree       
Reading state information... Done
All packages are up to date.
W: There is no public key available for the following key IDs:
EF0F382A1A7B6500


root@donkey:~# cat /etc/apt/sources.list /etc/apt/sources.list.d/*
# This file is managed by puppet
# all local modifications will be overwritten

### Debian current: jessie

# basic
deb http://deb.debian.org/debian/ jessie main

# security
deb http://security.debian.org/ jessie/updates main



### Debian next: stretch

# basic
deb http://deb.debian.org/debian/ stretch main

# security
deb http://security.debian.org/ stretch/updates main

deb http://deb.debian.org/debian/ jessie-backports main

deb [signed-by=/usr/share/keyrings/leap-archive.gpg] http://deb.leap.se/platform jessie snapshots

» gpg --search-keys EF0F382A1A7B6500
gpg: data source: https://host-37-191-226-104.lynet.no:443
(1)	Debian Stable Release Key (9/stretch) <debian-release@lists.debian.org
	  4096 bit RSA key 0xEF0F382A1A7B6500, created: 2017-05-20, expires: 2025-05-18
Keys 1-1 of 1 for "EF0F382A1A7B6500".  Enter number(s), N)ext, or Q)uit >
Edited by Varac