The network device is configured as a bridge.

hip:~ # cat /etc/sysconfig/network/ifcfg-br0 
BOOTPROTO='dhcp'
BRIDGE='yes'
BRIDGE_FORWARDDELAY='0'
BRIDGE_PORTS='eno1'
BRIDGE_STP='off'
BROADCAST=''
DHCLIENT_SET_DEFAULT_ROUTE='yes'
ETHTOOL_OPTIONS=''
IPADDR=''
MTU=''
NETMASK=''
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'


lmuelle@hip:~> ip -6 r s
fe80::/64 dev br0  proto kernel  metric 256 
lmuelle@hip:~> uptime
 10:44     0:08 an,  8 Benutzer,  Durchschnittslast: 0,00, 0,20, 0,19

and some minutes later I see:

lmuelle@hip:~> ip -6 r s
2a02:3100:9e02:d200::/64 dev br0  proto kernel  metric 256  expires 6060sec mtu
1492
2a02:3100:9e04:1e00::/64 dev br0  proto kernel  metric 256  expires 7124sec mtu
1492
fd00::/64 dev br0  proto kernel  metric 256  expires 7124sec mtu 1492
fe80::/64 dev br0  proto kernel  metric 256  mtu 1492
default via fe80::2665:11ff:fef7:203b dev br0  proto ra  metric 1024  expires
1724sec mtu 1492 hoplimit 255
lmuelle@hip:~> uptime 
 10:47     0:11 an,  9 Benutzer,  Durchschnittslast: 0,77, 0,51, 0,31