Your message dated Mon, 14 Sep 2020 06:34:32 +0000
with message-id <[email protected]>
and subject line Bug#969599: fixed in systemd 246.5-1
has caused the Debian Bug report #969599,
regarding systemd: Valid IPv6 addresses and routes discarded erroneously under 
certain conditions.
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
969599: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969599
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: systemd
Version: 246.4-1~bpo10+1
Severity: important
Tags: ipv6

Dear Maintainer,                                                                
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
The current BPO release of systemd includes a serious regression; valid SLAAC 
v6 addresses and routes                                                         
                                                                    
are discarded under certain circumstances. I believe this to be an instance of  
                                                                                
                                                                  
https://github.com/systemd/systemd/issues/16719 which is possibly fixed by 
https://github.com/systemd/systemd/pull/16725                                   
                                                                       
                                                                                
                                                                                
                                                                  
The user-visible symptom is that the systems stop responding on their 
SLAAC-configured v6 addresses until the link                                    
                                                                            
is next reconfigured; some time later they drop these addresses again.          
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
An extract from the debug log from systemd-networkd follows: note in particular 
the "Removing address" and "Forgetting address"                                 
                                                                  
lines in the log.                                                               
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
I think that pull/16725 should be cherry-picked into Debian as soon as 
possible.                                                                       
                                                                           
                                                                                
                                                                                
                                                                  
Thanks,                                                                         
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
     Colm                                                                       
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
                                                                                
                                                                                
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: NDISC: Received Router 
Advertisement: flags none preference medium lifetime 0 sec                      
                                                                              
Sep 05 20:23:13 lugh systemd-networkd[1148]: NDISC: Invoking callback for 
'router' event.                                                                 
                                                                        
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Configuring route: dst: 
fd79:b3fc:4a5b:1::/64, src: n/a, gw: n/a, prefsrc: n/a, scope: global, table: 
main, proto: ra, type: unicast                                           
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Updating address: 
fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be                                             
                                                                             
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Setting SLAAC addresses.     
                                                                                
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Setting NDisc routes.        
                                                                                
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: State changed: configured -> 
configuring                                                                     
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: Sent message type=signal 
sender=n/a destination=n/a path=/org/freedesktop/network1/link/_34 
interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=45 
reply_cookie=0 signature=sa{sv}as error-name=n/a error-message=n/a              
                                                                                
                                                                              
Sep 05 20:23:13 lugh systemd-networkd[1148]: rtnl: received non-static 
neighbor, ignoring.                                                             
                                                                           
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Received remembered route: 
dst: fd79:b3fc:4a5b:1::/64, src: n/a, gw: n/a, prefsrc: n/a, scope: global, 
table: main, proto: ra, type: unicast                                   
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: NDisc routes set.            
                                                                                
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: link_check_ready(): an 
address fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 is not ready.                    
                                                                        
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: Remembering updated address: 
fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 (valid for 2h)                           
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: link_check_ready(): an 
address fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 is not ready.                    
                                                                        
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: NDisc SLAAC addresses set.   
                                                                                
                                                                  
Sep 05 20:23:13 lugh systemd-networkd[1148]: int0: link_check_ready(): an 
address fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 is not ready.                    
                                                                        
Sep 05 20:23:13 lugh systemd-networkd[1148]: rtnl: received non-static 
neighbor, ignoring.                                                             
                                                                           
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Remembering foreign address: 
fd79:b3fc:4a5b:1:b055:92c6:a6b8:39b9/64 (valid for 1h 59min 59s)                
                                                                  
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: link_check_ready(): an 
address fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 is not ready.                    
                                                                        
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Remembering route: dst: 
fd79:b3fc:4a5b:1:b055:92c6:a6b8:39b9/128, src: n/a, gw: n/a, prefsrc: n/a, 
scope: global, table: local, proto: kernel, type: local                     
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Remembering updated address: 
fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/64 (valid for 1h 59min 59s)                 
                                                                  
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: link_check_ready(): 
dhcp4:yes dhcp6_addresses:no dhcp_routes:no dhcp_pd_addresses:no 
dhcp_pd_routes:no ndisc_addresses:yes ndisc_routes:yes                          
          
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: State changed: configuring 
-> configured                                                                   
                                                                    
Sep 05 20:23:14 lugh systemd-networkd[1148]: Sent message type=signal 
sender=n/a destination=n/a path=/org/freedesktop/network1/link/_34 
interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=46 
reply_cookie=0 signature=sa{sv}as error-name=n/a error-message=n/a              
                                                                                
                                                                              
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Removing old NDisc addresses 
and routes.                                                                     
                                                                  
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Removing address 
2a01:258:f100:107:56b2:3ff:fe1c:63be                                            
                                                                              
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Removing route: dst: n/a, 
src: n/a, gw: fe80::d8fa:ceff:fede:cade, prefsrc: n/a, scope: global, table: 
main, proto: ra, type: unicast                                          
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Removing route: dst: 
2a01:258:f100:107::/64, src: n/a, gw: n/a, prefsrc: n/a, scope: global, table: 
main, proto: ra, type: unicast                                             
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Remembering route: dst: 
fd79:b3fc:4a5b:1:56b2:3ff:fe1c:63be/128, src: n/a, gw: n/a, prefsrc: n/a, 
scope: global, table: local, proto: kernel, type: local                      
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Forgetting address: 
2a01:258:f100:107:56b2:3ff:fe1c:63be/64 (valid for 59min 48s)                   
                                                                           
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Forgetting route: dst: 
2a01:258:f100:107:56b2:3ff:fe1c:63be/128, src: n/a, gw: n/a, prefsrc: n/a, 
scope: global, table: local, proto: kernel, type: local                      
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Forgetting route: dst: n/a, 
src: n/a, gw: fe80::d8fa:ceff:fede:cade, prefsrc: n/a, scope: global, table: 
main, proto: ra, type: unicast                                        
Sep 05 20:23:14 lugh systemd-networkd[1148]: int0: Forgetting route: dst: 
2a01:258:f100:107::/64, src: n/a, gw: n/a, prefsrc: n/a, scope: global, table: 
main, proto: ra, type: unicast                                           
Sep 05 20:23:27 lugh systemd-networkd[1148]: rtnl: received non-static 
neighbor, ignoring.                                                             
                                                                           
Sep 05 20:23:27 lugh systemd-networkd[1148]: rtnl: received non-static 
neighbor, ignoring.                                                             
                                                                           
Sep 05 20:23:36 lugh systemd-networkd[1148]: LLDP: Invoking callback for 
'refreshed' event.                                                              
                                                                         
Sep 05 20:23:36 lugh systemd-networkd[1148]: LLDP: Successfully processed LLDP 
datagram.                                                                       
                                                                   


-- Package-specific info:

-- System Information:
Debian Release: 10.5
  APT prefers stable-updates
  APT policy: (900, 'stable-updates'), (900, 'stable'), (400, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.7.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, 
TAINT_UNSIGNED_MODULE
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_IE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  adduser                          3.118
ii  libacl1                          2.2.53-4
ii  libapparmor1                     2.13.2-10
ii  libaudit1                        1:2.8.4-3
ii  libblkid1                        2.33.1-0.1
ii  libc6                            2.28-10
ii  libcap2                          1:2.25-2
ii  libcryptsetup12                  2:2.3.3-2~bpo10+1
ii  libgcrypt20                      1.8.4-5
ii  libgnutls30                      3.6.7-4+deb10u5
ii  libgpg-error0                    1.35-1
ii  libidn2-0                        2.0.5-1+deb10u1
ii  libip4tc0                        1.8.2-4
ii  libkmod2                         26-1
ii  liblz4-1                         1.8.3-1
ii  liblzma5                         5.2.4-1
ii  libmount1                        2.33.1-0.1
ii  libpam0g                         1.3.1-5
ii  libpcre2-8-0                     10.32-5
ii  libseccomp2                      2.4.1-2~bpo10+1
ii  libselinux1                      2.8-1+b1
ii  libsystemd0                      246.4-1~bpo10+1
ii  libzstd1                         1.4.4+dfsg-3~bpo10+1
ii  mount                            2.33.1-0.1
ii  systemd-timesyncd [time-daemon]  246.4-1~bpo10+1
ii  util-linux                       2.33.1-0.1

Versions of packages systemd recommends:
ii  dbus  1.12.20-0+deb10u1

Versions of packages systemd suggests:
ii  policykit-1        0.105-25
pn  systemd-container  <none>

Versions of packages systemd is related to:
pn  dracut           <none>
ii  initramfs-tools  0.133+deb10u1
pn  libnss-systemd   <none>
ii  libpam-systemd   246.4-1~bpo10+1
ii  udev             246.4-1~bpo10+1

-- Configuration Files:
/etc/systemd/logind.conf changed [not included]
/etc/systemd/resolved.conf changed [not included]

-- no debconf information

--- End Message ---
--- Begin Message ---
Source: systemd
Source-Version: 246.5-1
Done: Michael Biebl <[email protected]>

We believe that the bug you reported is fixed in the latest version of
systemd, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Michael Biebl <[email protected]> (supplier of updated systemd package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

Format: 1.8
Date: Mon, 14 Sep 2020 08:04:39 +0200
Source: systemd
Architecture: source
Version: 246.5-1
Distribution: unstable
Urgency: medium
Maintainer: Debian systemd Maintainers 
<[email protected]>
Changed-By: Michael Biebl <[email protected]>
Closes: 969599 970156
Changes:
 systemd (246.5-1) unstable; urgency=medium
 .
   * New upstream version 246.5
     - network: fix NDisc handling for the case when multiple routers exist
       (Closes: #969599)
     - core/socket: we may get ENOTCONN from socket_instantiate_service()
       (Closes: #970156)
   * Rebase patches
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--- End Message ---

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