root@masq-c:~# radvdump
#
# radvd configuration generated by radvdump 2.15
# based on Router Advertisement from fe80::a00:27ff:fe92:d415
# received by interface enp0s8
#

interface enp0s8
{
        AdvSendAdvert on;
        # Note: {Min,Max}RtrAdvInterval cannot be obtained with radvdump
        AdvManagedFlag off;
        AdvOtherConfigFlag off;
        AdvReachableTime 0;
        AdvRetransTimer 0;
        AdvCurHopLimit 64;
        AdvDefaultLifetime 180;
        AdvHomeAgentFlag off;
        AdvDefaultPreference medium;
        AdvLinkMTU 1500;
        AdvSourceLLAddress on;

        prefix xxxx:yyyyy:zzzzz::/64
        {
                AdvValidLifetime 3600;
                AdvPreferredLifetime 3600;
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr off;
        }; # End of prefix definition


        RDNSS fe80::a00:27ff:fe92:d415
        {
                AdvRDNSSLifetime 3600;
        }; # End of RDNSS definition

}; # End of interface definition