Add option to ignore default lifetime for RDNSS records

[oweals/odhcp6c.git] / src / odhcp6c.c

diff --git a/src/odhcp6c.c b/src/odhcp6c.c
index ba568bd4499acd962e975edebc7ace89561bcfef..e97ad267f192e5b6e421658f8dae2e92eea61d46 100644 (file)
--- a/src/odhcp6c.c
+++ b/src/odhcp6c.c
@@ -74,8 +74,9 @@ int main(_unused int argc, char* const argv[])
        int logopt = LOG_PID;
        int c;
        unsigned int client_options = DHCPV6_CLIENT_FQDN | DHCPV6_ACCEPT_RECONFIGURE;
+       unsigned int ra_options = RA_RDNSS_DEFAULT_LIFETIME;
 
-       while ((c = getopt(argc, argv, "S::N:V:P:FB:c:i:r:Ru:s:kt:m:hedp:fav")) != -1) {
+       while ((c = getopt(argc, argv, "S::N:V:P:FB:c:i:r:Ru:s:kt:m:Lhedp:fav")) != -1) {
                switch (c) {
                case 'S':
                        allow_slaac_only = (optarg) ? atoi(optarg) : -1;
@@ -193,6 +194,10 @@ int main(_unused int argc, char* const argv[])
                        min_update_interval = atoi(optarg);
                        break;
 
+               case 'L':
+                       ra_options &= ~RA_RDNSS_DEFAULT_LIFETIME;
+                       break;
+
                case 'e':
                        logopt |= LOG_PERROR;
                        break;
@@ -244,7 +249,8 @@ int main(_unused int argc, char* const argv[])
 
        if ((urandom_fd = open("/dev/urandom", O_CLOEXEC | O_RDONLY)) < 0 ||
                        init_dhcpv6(ifname, client_options, sol_timeout) ||
-                       ra_init(ifname, &ifid) || script_init(script, ifname)) {
+                       ra_init(ifname, &ifid, ra_options) ||
+                       script_init(script, ifname)) {
                syslog(LOG_ERR, "failed to initialize: %s", strerror(errno));
                return 3;
        }
@@ -443,6 +449,7 @@ static int usage(void)
        "       -k              Don't send a RELEASE when stopping\n"
        "       -t <seconds>    Maximum timeout for DHCPv6-SOLICIT (120)\n"
        "       -m <seconds>    Minimum time between accepting updates (30)\n"
+       "       -L              Ignore default lifetime for RDNSS records\n"
        "\nInvocation options:\n"
        "       -p <pidfile>    Set pidfile (/var/run/odhcp6c.pid)\n"
        "       -d              Daemonize\n"