int ppp_restart_time; // timeout for PPP restart
int ppp_max_configure; // max lcp configure requests to send
int ppp_max_failure; // max lcp configure naks to send
+ int ppp_keepalive; // send echoes regardless
char radiussecret[64];
int radius_accounting;
uint32_t dhcp6_preferred_lifetime; // preferred lifetime (see rfc3315)
uint32_t dhcp6_valid_lifetime; // valid lifetime (see rfc3315)
uint32_t dhcp6_server_duid; // DUID of dhcpv6 server (see rfc3315)
+ uint32_t dns6_lifetime; // RDNSS lifetime default 1200 (see rfc6106, rfc4861) (MaxRtrAdvInterval <= Lifetime <= 2*MaxRtrAdvInterval)
char default_ipv6_domain_list[255];
} configt;