diff --git a/src/ca/Makefile b/src/ca/Makefile
index 38c164792..65f67963d 100644
--- a/src/ca/Makefile
+++ b/src/ca/Makefile
@@ -53,6 +53,7 @@ LIBSRCS += comQueSend.cpp
 LIBSRCS += cacPrivateListOfIO.cpp
 LIBSRCS += hostNameCache.cpp
 LIBSRCS += ioCounter.cpp
+LIBSRCS += msgForMultiplyDefinedPV.cpp
 
 LIBRARY=ca
 
diff --git a/src/ca/bhe_IL.h b/src/ca/bhe_IL.h
index 0eaa2546d..64c5d71c6 100644
--- a/src/ca/bhe_IL.h
+++ b/src/ca/bhe_IL.h
@@ -31,7 +31,7 @@ inline bhe::bhe ( class cac &cacIn, const osiTime &initialTimeStamp, const inetA
 #   ifdef DEBUG
     {
         char name[64];
-        ipAddrToA (&addr, name, sizeof(name));
+        ipAddrToDottedIP (&addr, name, sizeof(name));
         printf ("created beacon entry for %s\n", name);
     }
 #   endif
diff --git a/src/ca/cac.cpp b/src/ca/cac.cpp
index 77c4dba64..2a39c2492 100644
--- a/src/ca/cac.cpp
+++ b/src/ca/cac.cpp
@@ -505,7 +505,7 @@ void cac::beaconNotify ( const inetAddrID &addr )
 #   if DEBUG
     {
         char buf[64];
-        ipAddrToA (pnet_addr, buf, sizeof ( buf ) );
+        ipAddrToDottedIP (pnet_addr, buf, sizeof ( buf ) );
         printf ("new server available: %s\n", buf);
     }
 #   endif
diff --git a/src/ca/cac_IL.h b/src/ca/cac_IL.h
index 391a77224..ffcb8eef1 100644
--- a/src/ca/cac_IL.h
+++ b/src/ca/cac_IL.h
@@ -43,3 +43,9 @@ inline const char * cac::userNamePointer ()
 {
     return this->pUserName;
 }
+
+inline void cac::ipAddrToAsciiAsynchronousRequestInstall ( ipAddrToAsciiAsynchronous & request )
+{
+    request.ioInitiate ( this->ipToAEngine );
+}
+
diff --git a/src/ca/hostNameCache.cpp b/src/ca/hostNameCache.cpp
index 65b81d40b..7468043b2 100644
--- a/src/ca/hostNameCache.cpp
+++ b/src/ca/hostNameCache.cpp
@@ -51,7 +51,7 @@ void hostNameCache::hostName ( char *pBuf, unsigned bufSize ) const
     }
     else {
         osiSockAddr tmpAddr = this->address ();
-        sockAddrToDottedA ( &tmpAddr.sa, pBuf, bufSize );
+        sockAddrToDottedIP ( &tmpAddr.sa, pBuf, bufSize );
     }
     pBuf [ bufSize - 1u ] = '\0';
 }
diff --git a/src/ca/iocinf.cpp b/src/ca/iocinf.cpp
index 243e3911e..b1179bd01 100644
--- a/src/ca/iocinf.cpp
+++ b/src/ca/iocinf.cpp
@@ -114,7 +114,7 @@ epicsShareFunc void epicsShareAPI setPortAndRemoveDuplicates
                     if (pNode->addr.ia.sin_addr.s_addr == pTmpNode->addr.ia.sin_addr.s_addr && 
                         pNode->addr.ia.sin_port == pTmpNode->addr.ia.sin_port) {
                         char buf[64];
-                        ipAddrToA ( &pNode->addr.ia, buf, sizeof (buf) );
+                        ipAddrToDottedIP ( &pNode->addr.ia, buf, sizeof (buf) );
                         ca_printf ( "Warning: Duplicate EPICS CA Address list entry \"%s\" discarded\n", buf );
                         free (pNode);
                         pNode = NULL;
diff --git a/src/ca/iocinf.h b/src/ca/iocinf.h
index 5550cc08b..d230c40fd 100644
--- a/src/ca/iocinf.h
+++ b/src/ca/iocinf.h
@@ -679,6 +679,23 @@ private:
     const double period;
 };
 
+class msgForMultiplyDefinedPV : public ipAddrToAsciiAsynchronous {
+public:
+    msgForMultiplyDefinedPV ( 
+        cac &cacRefIn, const char *pChannelName, const char *pAcc, 
+        const osiSockAddr &rej );
+    msgForMultiplyDefinedPV ( const osiSockAddr &addr, ipAddrToAsciiEngine &engine );
+    void * operator new ( size_t size );
+    void operator delete ( void *pCadaver, size_t size );
+private:
+    void ioCompletionNotify ( const char *pHostName );
+    char acc[64];
+    char channel[64];
+    cac &cacRef;
+
+    static tsFreeList < class msgForMultiplyDefinedPV, 16 > freeList;
+};
+
 class hostNameCache : public ipAddrToAsciiAsynchronous {
 public:
     hostNameCache ( const osiSockAddr &addr, ipAddrToAsciiEngine &engine );
@@ -1066,6 +1083,7 @@ public:
     int printf ( const char *pformat, ... );
     int vPrintf ( const char *pformat, va_list args );
     void replaceErrLogHandler ( caPrintfFunc *ca_printf_func );
+    void ipAddrToAsciiAsynchronousRequestInstall ( ipAddrToAsciiAsynchronous & request );
 
 private:
     ipAddrToAsciiEngine     ipToAEngine;
diff --git a/src/ca/msgForMultiplyDefinedPV.cpp b/src/ca/msgForMultiplyDefinedPV.cpp
new file mode 100644
index 000000000..9223fedf7
--- /dev/null
+++ b/src/ca/msgForMultiplyDefinedPV.cpp
@@ -0,0 +1,41 @@
+
+/*  
+ *  $Id$
+ *
+ *                              
+ *                    L O S  A L A M O S
+ *              Los Alamos National Laboratory
+ *               Los Alamos, New Mexico 87545
+ *                                  
+ *  Copyright, 1986, The Regents of the University of California.
+ *                                  
+ *           
+ *	Author Jeffrey O. Hill
+ *	johill@lanl.gov
+ *	505 665 1831
+ */
+
+#include "iocinf.h"
+#include "msgForMultiplyDefinedPV_IL.h"
+
+tsFreeList < class msgForMultiplyDefinedPV, 16 > msgForMultiplyDefinedPV::freeList;
+
+msgForMultiplyDefinedPV::msgForMultiplyDefinedPV ( 
+        cac &cacRefIn, const char *pChannelName, const char *pAcc, 
+        const osiSockAddr &rej ) :
+    ipAddrToAsciiAsynchronous ( rej ),
+    cacRef ( cacRefIn )
+{
+    strncpy ( this->acc, pAcc, sizeof ( this->acc ) );
+    this->acc[ sizeof ( this->acc ) - 1 ] = '\0';
+    strncpy ( this->channel, pChannelName, sizeof ( this->channel ) );
+    this->channel[ sizeof ( this->channel ) - 1 ] = '\0';
+}
+
+void msgForMultiplyDefinedPV::ioCompletionNotify ( const char *pHostNameRej )
+{
+    char buf[256];
+    sprintf ( buf, "Channel: \"%.64s\", Connecting to: %.64s, Ignored: %.64s",
+            this->channel, this->acc, pHostNameRej );
+    genLocalExcep ( this->cacRef, ECA_DBLCHNL, buf );
+}
diff --git a/src/ca/msgForMultiplyDefinedPV_IL.h b/src/ca/msgForMultiplyDefinedPV_IL.h
new file mode 100644
index 000000000..e94e3364d
--- /dev/null
+++ b/src/ca/msgForMultiplyDefinedPV_IL.h
@@ -0,0 +1,26 @@
+
+/*  
+ *  $Id$
+ *
+ *                              
+ *                    L O S  A L A M O S
+ *              Los Alamos National Laboratory
+ *               Los Alamos, New Mexico 87545
+ *                                  
+ *  Copyright, 1986, The Regents of the University of California.
+ *                                  
+ *           
+ *	Author Jeffrey O. Hill
+ *	johill@lanl.gov
+ *	505 665 1831
+ */
+
+void * msgForMultiplyDefinedPV::operator new ( size_t size )
+{
+    return msgForMultiplyDefinedPV::freeList.allocate ( size );
+}
+
+void msgForMultiplyDefinedPV::operator delete ( void *pCadaver, size_t size )
+{
+    msgForMultiplyDefinedPV::freeList.release ( pCadaver, size );
+}
\ No newline at end of file
diff --git a/src/ca/tcpiiu.cpp b/src/ca/tcpiiu.cpp
index 80d8d48ea..c6d5b7298 100644
--- a/src/ca/tcpiiu.cpp
+++ b/src/ca/tcpiiu.cpp
@@ -703,14 +703,12 @@ bool tcpiiu::connectionInProgress ( const char *pChannelName, const osiSockAddr
 {
     if ( ! this->ipToA.identicalAddress ( addr ) ) {
         char acc[64];
-        char rej[64];
-        char buf[256];
-
-        this->ipToA.hostName ( acc, sizeof (acc) );
-        sockAddrToA ( &addr.sa, rej, sizeof (rej) );
-        sprintf ( buf, "Channel: \"%.64s\", Connecting to: %.64s, Ignored: %.64s",
-                pChannelName, acc, rej );
-        genLocalExcep ( this->clientCtx (), ECA_DBLCHNL, buf );
+        this->ipToA.hostName ( acc, sizeof ( acc ) );
+        msgForMultiplyDefinedPV *pMsg = new msgForMultiplyDefinedPV ( 
+            this->clientCtx (), pChannelName, acc, addr );
+        if ( pMsg ) {
+            this->clientCtx ().ipAddrToAsciiAsynchronousRequestInstall ( *pMsg );
+        }
     }
     return true;
 }
diff --git a/src/ca/udpiiu.cpp b/src/ca/udpiiu.cpp
index e9ea97a23..0edbdf17c 100644
--- a/src/ca/udpiiu.cpp
+++ b/src/ca/udpiiu.cpp
@@ -101,7 +101,7 @@ void udpiiu::recvMsg ()
         if ( status != ECA_NORMAL ) {
             char buf[64];
 
-            sockAddrToA ( &src.sa, buf, sizeof ( buf ) );
+            sockAddrToDottedIP ( &src.sa, buf, sizeof ( buf ) );
 
             ca_printf (
                 "%s: bad UDP msg from %s because \"%s\"\n", __FILE__, 
@@ -498,7 +498,7 @@ void udpiiu::shutdown ()
 void udpiiu::badUDPRespAction ( const caHdr &msg, const osiSockAddr &netAddr )
 {
     char buf[256];
-    sockAddrToA ( &netAddr.sa, buf, sizeof ( buf ) );
+    sockAddrToDottedIP ( &netAddr.sa, buf, sizeof ( buf ) );
     ca_printf ( "CAC: Bad response code in UDP message from %s was %u\n", 
         buf, msg.m_cmmd);
 }
@@ -630,7 +630,7 @@ void udpiiu::exceptionRespAction ( const caHdr &msg, const osiSockAddr &net_addr
     const caHdr &reqMsg = * ( &msg + 1 );
     char name[64];
 
-    sockAddrToA ( &net_addr.sa, name, sizeof ( name ) );
+    sockAddrToDottedIP ( &net_addr.sa, name, sizeof ( name ) );
 
     if ( msg.m_postsize > sizeof ( caHdr ) ){
         errlogPrintf ( "error condition \"%s\" detected by %s with context \"%s\"\n", 
@@ -812,7 +812,7 @@ void udpiiu::flush ()
                 else {
                     char buf[64];
 
-                    sockAddrToA ( &pNode->addr.sa, buf, sizeof ( buf ) );
+                    sockAddrToDottedIP ( &pNode->addr.sa, buf, sizeof ( buf ) );
 
                     ca_printf (
                         "CAC: error = \"%s\" sending UDP msg to %s\n",