Remove DAD for now due to kernel issues

diff --git a/src/odhcp6c.c b/src/odhcp6c.c
index f732d9e8fa52b36f1f2f5d314e94e98967df8851..38b8e82fe9560b421c634bf2ee631a0a03e92904 100644 (file)
--- a/src/odhcp6c.c
+++ b/src/odhcp6c.c
@@ -375,10 +375,9 @@ bool odhcp6c_signal_process(void)
 {
        if (do_signal == SIGIO) {
                do_signal = 0;
-               bool ra_rtnled = ra_rtnl_process();
                bool ra_updated = ra_process();
 
-               if (ra_rtnled || (ra_updated && (bound || allow_slaac_only == 0)))
+               if (ra_updated && (bound || allow_slaac_only == 0))
                        script_call("ra-updated"); // Immediate process urgent events
                else if (ra_updated && !bound && allow_slaac_only > 0)
                        script_delay_call("ra-updated", allow_slaac_only);

diff --git a/src/ra.c b/src/ra.c
index 4690d419466975357a5a9bce667f469c633f87b2..4c1302cc45482db6967021e7ba6dd52f34f8c913 100644 (file)
--- a/src/ra.c
+++ b/src/ra.c
@@ -34,7 +34,7 @@
 #include "ra.h"
 
 
-static int sock = -1, rtnl_sock = -1;
+static int sock = -1;
 static unsigned if_index = 0;
 static char if_name[IF_NAMESIZE] = {0};
 static volatile int rs_attempt = 0;
@@ -90,18 +90,6 @@ int ra_init(const char *ifname, const struct in6_addr *ifid)
                }
        }
 
-       // Open rtnetlink socket
-       rtnl_sock = socket(AF_NETLINK, SOCK_RAW | SOCK_CLOEXEC, NETLINK_ROUTE);
-       struct sockaddr_nl rtnl_kernel = { .nl_family = AF_NETLINK };
-       if (connect(rtnl_sock, (struct sockaddr*)&rtnl_kernel, sizeof(rtnl_kernel)))
-               return -1;
-       uint32_t group = RTNLGRP_IPV6_IFADDR;
-       setsockopt(rtnl_sock, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &group, sizeof(group));
-
-       // Add async-mode
-       fcntl(rtnl_sock, F_SETOWN, ourpid);
-       fcntl(rtnl_sock, F_SETFL, fcntl(rtnl_sock, F_GETFL) | O_ASYNC);
-
        // Send RS
        signal(SIGALRM, ra_send_rs);
        ra_send_rs(SIGALRM);
@@ -140,63 +128,6 @@ static void update_proc(const char *sect, const char *opt, uint32_t value)
 }
 
 
-static bool ra_deduplicate(const struct in6_addr *any, uint8_t length)
-{
-       struct odhcp6c_entry entry = {IN6ADDR_ANY_INIT, length, 0, *any, 0, 0};
-       struct odhcp6c_entry *x = odhcp6c_find_entry(STATE_RA_PREFIX, &entry);
-       if (x && IN6_ARE_ADDR_EQUAL(&x->target, any)) {
-               odhcp6c_random(&x->target.s6_addr32[2], 2 * sizeof(uint32_t));
-       } else if (odhcp6c_find_entry(STATE_IA_NA, &entry)) {
-               dhcpv6_request(DHCPV6_MSG_DECLINE);
-               raise(SIGUSR2);
-       }
-
-       return !!x;
-}
-
-
-bool ra_rtnl_process(void)
-{
-       bool found = false;
-       uint32_t elapsed = odhcp6c_elapsed();
-       uint8_t buf[8192];
-       while (true) {
-               ssize_t len = recv(rtnl_sock, buf, sizeof(buf), MSG_DONTWAIT);
-               if (len < 0)
-                       break;
-
-               if (elapsed > 10)
-                       continue;
-
-               for (struct nlmsghdr *nh = (struct nlmsghdr*)buf; NLMSG_OK(nh, (size_t)len);
-                                       nh = NLMSG_NEXT(nh, len)) {
-                       struct ifaddrmsg *ifa = NLMSG_DATA(nh);
-                       struct in6_addr *addr = NULL;
-                       if (NLMSG_PAYLOAD(nh, 0) < sizeof(*ifa) || ifa->ifa_index != if_index ||
-                                       (nh->nlmsg_type == RTM_NEWADDR && !(ifa->ifa_flags & IFA_F_DADFAILED)) ||
-                                       (nh->nlmsg_type == RTM_DELADDR && !(ifa->ifa_flags & IFA_F_TENTATIVE)) ||
-                                       (nh->nlmsg_type != RTM_NEWADDR && nh->nlmsg_type != RTM_DELADDR))
-                               continue;
-
-                       ssize_t alen = NLMSG_PAYLOAD(nh, sizeof(*ifa));
-                       for (struct rtattr *rta = (struct rtattr*)&ifa[1]; RTA_OK(rta, alen);
-                                       rta = RTA_NEXT(rta, alen))
-                               if (rta->rta_type == IFA_ADDRESS && RTA_PAYLOAD(rta) >= sizeof(*addr))
-                                       addr = RTA_DATA(rta);
-
-                       if (addr) {
-                               char ipbuf[INET6_ADDRSTRLEN];
-                               inet_ntop(AF_INET6, addr, ipbuf, sizeof(ipbuf));
-                               syslog(LOG_WARNING, "duplicate address detected: %s (code: %u:%x)",
-                                               ipbuf, (unsigned)nh->nlmsg_type, (unsigned)ifa->ifa_flags);
-                               found |= ra_deduplicate(addr, ifa->ifa_prefixlen);
-                       }
-               }
-       }
-       return found;
-}
-
-
 bool ra_process(void)
 {
        bool found = false;

diff --git a/src/ra.h b/src/ra.h
index f66ff2672cd0353a6bea90e4313d0973ddcedaa6..a31e7f69cfeba44b5757ccfc9f5e4491887b64a2 100644 (file)
--- a/src/ra.h
+++ b/src/ra.h
@@ -36,4 +36,3 @@ struct icmpv6_opt {
 
 int ra_init(const char *ifname, const struct in6_addr *ifid);
 bool ra_process(void);
-bool ra_rtnl_process(void);