diff --git a/pimd/pim_join.c b/pimd/pim_join.c
new file mode 100644
index 0000000..ce4ec4e
--- /dev/null
+++ b/pimd/pim_join.c
@@ -0,0 +1,428 @@
+/*
+  PIM for Quagga
+  Copyright (C) 2008  Everton da Silva Marques
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+  
+  You should have received a copy of the GNU General Public License
+  along with this program; see the file COPYING; if not, write to the
+  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+  MA 02110-1301 USA
+  
+  $QuaggaId: $Format:%an, %ai, %h$ $
+*/
+
+#include <zebra.h>
+
+#include "log.h"
+#include "prefix.h"
+
+#include "pimd.h"
+#include "pim_str.h"
+#include "pim_tlv.h"
+#include "pim_msg.h"
+#include "pim_pim.h"
+#include "pim_join.h"
+#include "pim_iface.h"
+#include "pim_hello.h"
+#include "pim_ifchannel.h"
+
+static void on_trace(const char *label,
+		     struct interface *ifp, struct in_addr src)
+{
+  if (PIM_DEBUG_PIM_TRACE) {
+    char src_str[100];
+    pim_inet4_dump("<src?>", src, src_str, sizeof(src_str));
+    zlog_debug("%s: from %s on %s",
+	       label, src_str, ifp->name);
+  }
+}
+
+static void recv_join(struct interface *ifp,
+		      struct pim_neighbor *neigh,
+		      uint16_t holdtime,
+		      struct in_addr upstream,
+		      struct in_addr group,
+		      struct in_addr source,
+		      uint8_t source_flags)
+{
+  if (PIM_DEBUG_PIM_TRACE) {
+    char up_str[100];
+    char src_str[100];
+    char grp_str[100];
+    char neigh_str[100];
+    pim_inet4_dump("<upstream?>", upstream, up_str, sizeof(up_str));
+    pim_inet4_dump("<src?>", source, src_str, sizeof(src_str));
+    pim_inet4_dump("<grp?>", group, grp_str, sizeof(grp_str));
+    pim_inet4_dump("<neigh?>", neigh->source_addr, neigh_str, sizeof(neigh_str));
+    zlog_warn("%s: join (S,G)=(%s,%s) rpt=%d wc=%d upstream=%s holdtime=%d from %s on %s",
+	      __PRETTY_FUNCTION__,
+	      src_str, grp_str,
+	      source_flags & PIM_RPT_BIT_MASK,
+	      source_flags & PIM_WILDCARD_BIT_MASK,
+	      up_str, holdtime, neigh_str, ifp->name);
+  }
+  
+  /* Restart join expiry timer */
+  pim_ifchannel_join_add(ifp, neigh->source_addr, upstream,
+			 source, group, source_flags, holdtime);
+}
+
+static void recv_prune(struct interface *ifp,
+		       struct pim_neighbor *neigh,
+		       uint16_t holdtime,
+		       struct in_addr upstream,
+		       struct in_addr group,
+		       struct in_addr source,
+		       uint8_t source_flags)
+{
+  if (PIM_DEBUG_PIM_TRACE) {
+    char up_str[100];
+    char src_str[100];
+    char grp_str[100];
+    char neigh_str[100];
+    pim_inet4_dump("<upstream?>", upstream, up_str, sizeof(up_str));
+    pim_inet4_dump("<src?>", source, src_str, sizeof(src_str));
+    pim_inet4_dump("<grp?>", group, grp_str, sizeof(grp_str));
+    pim_inet4_dump("<neigh?>", neigh->source_addr, neigh_str, sizeof(neigh_str));
+    zlog_warn("%s: prune (S,G)=(%s,%s) rpt=%d wc=%d upstream=%s holdtime=%d from %s on %s",
+	      __PRETTY_FUNCTION__,
+	      src_str, grp_str,
+	      source_flags & PIM_RPT_BIT_MASK,
+	      source_flags & PIM_WILDCARD_BIT_MASK,
+	      up_str, holdtime, neigh_str, ifp->name);
+  }
+  
+  pim_ifchannel_prune(ifp, upstream, source, group, source_flags, holdtime);
+}
+
+int pim_joinprune_recv(struct interface *ifp,
+		       struct pim_neighbor *neigh,
+		       struct in_addr src_addr,
+		       char *tlv_buf, int tlv_buf_size)
+{
+  struct prefix   msg_upstream_addr;
+  uint8_t         msg_num_groups;
+  uint16_t        msg_holdtime;
+  int             addr_offset;
+  char           *buf;
+  char           *pastend;
+  int             remain;
+  int             group;
+
+  on_trace(__PRETTY_FUNCTION__, ifp, src_addr);
+
+  buf     = tlv_buf;
+  pastend = tlv_buf + tlv_buf_size;
+
+  /*
+    Parse ucast addr
+  */
+  addr_offset = pim_parse_addr_ucast(ifp->name, src_addr,
+				     &msg_upstream_addr,
+				     buf, pastend - buf);
+  if (addr_offset < 1) {
+    char src_str[100];
+    pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+    zlog_warn("%s: pim_parse_addr_ucast() failure: from %s on %s",
+	      __PRETTY_FUNCTION__,
+	      src_str, ifp->name);
+    return -1;
+  }
+  buf += addr_offset;
+
+  /*
+    Check upstream address family
+   */
+  if (msg_upstream_addr.family != AF_INET) {
+    if (PIM_DEBUG_PIM_TRACE) {
+      char src_str[100];
+      pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+      zlog_warn("%s: ignoring join/prune directed to unexpected addr family=%d from %s on %s",
+		__PRETTY_FUNCTION__,
+		msg_upstream_addr.family, src_str, ifp->name);
+    }
+    return -2;
+  }
+
+  remain = pastend - buf;
+  if (remain < 4) {
+    char src_str[100];
+    pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+    zlog_warn("%s: short join/prune message buffer for group list: size=%d minimum=%d from %s on %s",
+	      __PRETTY_FUNCTION__,
+	      remain, 4, src_str, ifp->name);
+    return -4;
+  }
+
+  ++buf; /* skip reserved byte */
+  msg_num_groups = *(const uint8_t *) buf;
+  ++buf;
+  msg_holdtime = ntohs(*(const uint16_t *) buf);
+  ++buf;
+  ++buf;
+
+  if (PIM_DEBUG_PIM_TRACE) {
+    char src_str[100];
+    char upstream_str[100];
+    pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+    pim_inet4_dump("<addr?>", msg_upstream_addr.u.prefix4,
+		   upstream_str, sizeof(upstream_str));
+    zlog_warn("%s: join/prune upstream=%s groups=%d holdtime=%d from %s on %s",
+	      __PRETTY_FUNCTION__,
+	      upstream_str, msg_num_groups, msg_holdtime,
+	      src_str, ifp->name);
+  }
+
+  /* Scan groups */
+  for (group = 0; group < msg_num_groups; ++group) {
+    struct prefix msg_group_addr;
+    struct prefix msg_source_addr;
+    uint8_t       msg_source_flags;
+    uint16_t      msg_num_joined_sources;
+    uint16_t      msg_num_pruned_sources;
+    int           source;
+
+    addr_offset = pim_parse_addr_group(ifp->name, src_addr,
+				       &msg_group_addr,
+				       buf, pastend - buf);
+    if (addr_offset < 1) {
+      return -5;
+    }
+    buf += addr_offset;
+
+    remain = pastend - buf;
+    if (remain < 4) {
+      char src_str[100];
+      pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+      zlog_warn("%s: short join/prune buffer for source list: size=%d minimum=%d from %s on %s",
+		__PRETTY_FUNCTION__,
+		remain, 4, src_str, ifp->name);
+      return -6;
+    }
+
+    msg_num_joined_sources = ntohs(*(const uint16_t *) buf);
+    buf += 2;
+    msg_num_pruned_sources = ntohs(*(const uint16_t *) buf);
+    buf += 2;
+
+    if (PIM_DEBUG_PIM_TRACE) {
+      char src_str[100];
+      char upstream_str[100];
+      char group_str[100];
+      pim_inet4_dump("<src?>", src_addr, src_str, sizeof(src_str));
+      pim_inet4_dump("<addr?>", msg_upstream_addr.u.prefix4,
+		     upstream_str, sizeof(upstream_str));
+      pim_inet4_dump("<grp?>", msg_group_addr.u.prefix4,
+		     group_str, sizeof(group_str));
+      zlog_warn("%s: join/prune upstream=%s group=%s/%d join_src=%d prune_src=%d from %s on %s",
+		__PRETTY_FUNCTION__,
+		upstream_str, group_str, msg_group_addr.prefixlen,
+		msg_num_joined_sources, msg_num_pruned_sources,
+		src_str, ifp->name);
+    }
+
+    /* Scan joined sources */
+    for (source = 0; source < msg_num_joined_sources; ++source) {
+      addr_offset = pim_parse_addr_source(ifp->name, src_addr,
+					  &msg_source_addr,
+					  &msg_source_flags,
+					  buf, pastend - buf);
+      if (addr_offset < 1) {
+	return -7;
+      }
+      buf += addr_offset;
+
+      recv_join(ifp, neigh, msg_holdtime,
+		msg_upstream_addr.u.prefix4,
+		msg_group_addr.u.prefix4,
+		msg_source_addr.u.prefix4,
+		msg_source_flags);
+    }
+
+    /* Scan pruned sources */
+    for (source = 0; source < msg_num_pruned_sources; ++source) {
+      addr_offset = pim_parse_addr_source(ifp->name, src_addr,
+					  &msg_source_addr,
+					  &msg_source_flags,
+					  buf, pastend - buf);
+      if (addr_offset < 1) {
+	return -8;
+      }
+      buf += addr_offset;
+
+      recv_prune(ifp, neigh, msg_holdtime,
+		 msg_upstream_addr.u.prefix4,
+		 msg_group_addr.u.prefix4,
+		 msg_source_addr.u.prefix4,
+		 msg_source_flags);
+    }
+
+  } /* scan groups */
+
+  return 0;
+}
+
+int pim_joinprune_send(struct interface *ifp,
+		       struct in_addr upstream_addr,
+		       struct in_addr source_addr,
+		       struct in_addr group_addr,
+		       int send_join)
+{
+  struct pim_interface *pim_ifp;
+  char pim_msg[1000];
+  const char *pastend = pim_msg + sizeof(pim_msg);
+  char *pim_msg_curr = pim_msg + PIM_MSG_HEADER_LEN; /* room for pim header */
+  int pim_msg_size;
+  int remain;
+
+  zassert(ifp);
+
+  pim_ifp = ifp->info;
+
+  if (!pim_ifp) {
+    zlog_warn("%s: multicast not enabled on interface %s",
+	      __PRETTY_FUNCTION__,
+	      ifp->name);
+    return -1;
+  }
+
+  if (PIM_DEBUG_PIM_TRACE) {
+    char source_str[100];
+    char group_str[100];
+    char dst_str[100];
+    pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str));
+    pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str));
+    pim_inet4_dump("<dst?>", upstream_addr, dst_str, sizeof(dst_str));
+    zlog_debug("%s: sending %s(S,G)=(%s,%s) to upstream=%s on interface %s",
+	       __PRETTY_FUNCTION__,
+	       send_join ? "Join" : "Prune",
+	       source_str, group_str, dst_str, ifp->name);
+  }
+
+  if (PIM_INADDR_IS_ANY(upstream_addr)) {
+    if (PIM_DEBUG_PIM_TRACE) {
+      char source_str[100];
+      char group_str[100];
+      char dst_str[100];
+      pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str));
+      pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str));
+      pim_inet4_dump("<dst?>", upstream_addr, dst_str, sizeof(dst_str));
+      zlog_debug("%s: %s(S,G)=(%s,%s): upstream=%s is myself on interface %s",
+		 __PRETTY_FUNCTION__,
+		 send_join ? "Join" : "Prune",
+		 source_str, group_str, dst_str, ifp->name);
+    }
+    return 0;
+  }
+
+  /*
+    RFC 4601: 4.3.1.  Sending Hello Messages
+
+    Thus, if a router needs to send a Join/Prune or Assert message on
+    an interface on which it has not yet sent a Hello message with the
+    currently configured IP address, then it MUST immediately send the
+    relevant Hello message without waiting for the Hello Timer to
+    expire, followed by the Join/Prune or Assert message.
+  */
+  pim_hello_require(ifp);
+
+  /*
+    Build PIM message
+  */
+
+  remain = pastend - pim_msg_curr;
+  pim_msg_curr = pim_msg_addr_encode_ipv4_ucast(pim_msg_curr,
+						remain,
+						upstream_addr);
+  if (!pim_msg_curr) {
+    char dst_str[100];
+    pim_inet4_dump("<dst?>", upstream_addr, dst_str, sizeof(dst_str));
+    zlog_warn("%s: failure encoding destination address %s: space left=%d",
+	      __PRETTY_FUNCTION__, dst_str, remain);
+    return -3;
+  }
+
+  remain = pastend - pim_msg_curr;
+  if (remain < 4) {
+    zlog_warn("%s: group will not fit: space left=%d",
+	    __PRETTY_FUNCTION__, remain);
+    return -4;
+  }
+
+  *pim_msg_curr = 0; /* reserved */
+  ++pim_msg_curr;
+  *pim_msg_curr = 1; /* number of groups */
+  ++pim_msg_curr;
+  *((uint16_t *) pim_msg_curr) = htons(PIM_JP_HOLDTIME);
+  ++pim_msg_curr;
+  ++pim_msg_curr;
+
+  remain = pastend - pim_msg_curr;
+  pim_msg_curr = pim_msg_addr_encode_ipv4_group(pim_msg_curr,
+						remain,
+						group_addr);
+  if (!pim_msg_curr) {
+    char group_str[100];
+    pim_inet4_dump("<grp?>", group_addr, group_str, sizeof(group_str));
+    zlog_warn("%s: failure encoding group address %s: space left=%d",
+	      __PRETTY_FUNCTION__, group_str, remain);
+    return -5;
+  }
+
+  remain = pastend - pim_msg_curr;
+  if (remain < 4) {
+    zlog_warn("%s: sources will not fit: space left=%d",
+	      __PRETTY_FUNCTION__, remain);
+    return -6;
+  }
+
+  /* number of joined sources */
+  *((uint16_t *) pim_msg_curr) = htons(send_join ? 1 : 0);
+  ++pim_msg_curr;
+  ++pim_msg_curr;
+
+  /* number of pruned sources */
+  *((uint16_t *) pim_msg_curr) = htons(send_join ? 0 : 1);
+  ++pim_msg_curr;
+  ++pim_msg_curr;
+
+  remain = pastend - pim_msg_curr;
+  pim_msg_curr = pim_msg_addr_encode_ipv4_source(pim_msg_curr,
+						 remain,
+						 source_addr);
+  if (!pim_msg_curr) {
+    char source_str[100];
+    pim_inet4_dump("<src?>", source_addr, source_str, sizeof(source_str));
+    zlog_warn("%s: failure encoding source address %s: space left=%d",
+	      __PRETTY_FUNCTION__, source_str, remain);
+    return -7;
+  }
+
+  /* Add PIM header */
+
+  pim_msg_size = pim_msg_curr - pim_msg;
+
+  pim_msg_build_header(pim_msg, pim_msg_size,
+		       PIM_MSG_TYPE_JOIN_PRUNE);
+
+  if (pim_msg_send(pim_ifp->pim_sock_fd,
+		   qpim_all_pim_routers_addr,
+		   pim_msg,
+		   pim_msg_size,
+		   ifp->name)) {
+    zlog_warn("%s: could not send PIM message on interface %s",
+	      __PRETTY_FUNCTION__, ifp->name);
+    return -8;
+  }
+
+  return 0;
+}