F28 - Update reintroduced missing connection after suspend

[Stephan Goldenberg <dg1ees oppator de>]

Hi,

I had this with Fedora 27, which made me move to systemd-networkd. But 
that served SELinux alerts.

After freshly installing Fedora 28 all was fine. After suspend 
NetworkManager was able to keep the internet connection. But then there 
was an update for NetworkManager last friday. Since then the connection 
is gone after suspend. I have no better idea than to reboot to bring the 
connection back up.

It's a plain old cable based 1GBit/s connection. No WLAN, no other fancy 
network. What do you need to hunt this down ?

[root@localhost ~]# systemctl status NetworkManager
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; 
enabled; vendor preset: enabled)
   Active: active (running) since Mon 2018-05-14 20:23:04 CEST; 21min ago
     Docs: man:NetworkManager(8)
 Main PID: 792 (NetworkManager)
    Tasks: 4 (limit: 4915)
   Memory: 15.7M
   CGroup: /system.slice/NetworkManager.service
           ├─ 792 /usr/sbin/NetworkManager --no-daemon
           └─1080 /sbin/dhclient -d -q -sf /usr/libexec/nm-dhcp-helper 
-pf /var/run/dhclient-enp3s0.pid -lf 
/var/lib/NetworkManager/dhclient-3e941d75-3763-3d91-98e8-0044a42c1803-enp3s0.lease 
-cf /var/lib/Networ>

Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.2030] dhcp6 (enp3s0): activation: beginning transaction 
(timeout in 45 seconds)
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.2061] dhcp6 (enp3s0): dhclient started with pid 1263
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.2071] policy: set 'enp3s0' (enp3s0) as default for IPv6 
routing and DNS
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.8149] manager: NetworkManager state is now CONNECTED_GLOBAL
Mai 14 20:23:16 localhost.localdomain dhclient[1263]: XMT: Info-Request 
on enp3s0, interval 1080ms.
Mai 14 20:23:16 localhost.localdomain dhclient[1263]: RCV: Reply message 
on enp3s0 from fe80::3a10:d5ff:fe69:bd67.
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.9315] dhcp6 (enp3s0):   nameserver 'fd00::3a10:d5ff:fe69:bd67'
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.9316] dhcp6 (enp3s0): state changed unknown -> bound
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.9343] dhcp6 (enp3s0): client pid 1263 exited with status 0
Mai 14 20:23:16 localhost.localdomain NetworkManager[792]: <info> 
[1526322196.9343] dhcp6 (enp3s0): state changed bound -> done

Regards,
Stephan