diff --git a/src/include/socket.h b/src/include/socket.h
index 53fda4d..d72480b 100644
--- a/src/include/socket.h
+++ b/src/include/socket.h
@@ -44,7 +44,7 @@ struct ncclSocket {
   enum ncclSocketState state;
 };
 
-const char *ncclSocketToString(union ncclSocketAddress *addr, char *buf);
+const char *ncclSocketToString(union ncclSocketAddress *addr, char *buf, const int numericHostForm = 1);
 ncclResult_t ncclGetSocketAddrFromString(union ncclSocketAddress* ua, const char* ip_port_pair);
 int ncclFindInterfaceMatchSubnet(char* ifNames, union ncclSocketAddress* localAddrs, union ncclSocketAddress* remoteAddr, int ifNameMaxSize, int maxIfs);
 int ncclFindInterfaces(char* ifNames, union ncclSocketAddress *ifAddrs, int ifNameMaxSize, int maxIfs);
diff --git a/src/misc/socket.cc b/src/misc/socket.cc
index 4e3295f..ef2bea6 100644
--- a/src/misc/socket.cc
+++ b/src/misc/socket.cc
@@ -16,12 +16,16 @@
  *
  * Output: "IPv4/IPv6 address<port>"
  */
-const char *ncclSocketToString(union ncclSocketAddress *addr, char *buf) {
+const char *ncclSocketToString(union ncclSocketAddress *addr, char *buf, const int numericHostForm /*= 1*/) {
   if (buf == NULL || addr == NULL) return NULL;
   struct sockaddr *saddr = &addr->sa;
   if (saddr->sa_family != AF_INET && saddr->sa_family != AF_INET6) { buf[0]='\0'; return buf; }
   char host[NI_MAXHOST], service[NI_MAXSERV];
-  (void) getnameinfo(saddr, sizeof(union ncclSocketAddress), host, NI_MAXHOST, service, NI_MAXSERV, NI_NUMERICHOST|NI_NUMERICSERV);
+  /* NI_NUMERICHOST: If set, then the numeric form of the hostname is returned.
+   * (When not set, this will still happen in case the node's name cannot be determined.)
+   */
+  int flag = NI_NUMERICSERV | (numericHostForm ? NI_NUMERICHOST : 0);
+  (void) getnameinfo(saddr, sizeof(union ncclSocketAddress), host, NI_MAXHOST, service, NI_MAXSERV, flag);
   sprintf(buf, "%s<%s>", host, service);
   return buf;
 }
@@ -516,7 +520,7 @@ ncclResult_t ncclSocketProgress(int op, struct ncclSocket* sock, void* ptr, int
   NCCLCHECK(ncclSocketProgressOpt(op, sock, ptr, size, offset, 0, &closed));
   if (closed) {
     char line[SOCKET_NAME_MAXLEN+1];
-    WARN("Net : Connection closed by remote peer %s", ncclSocketToString(&sock->addr, line));
+    WARN("Net : Connection closed by remote peer %s", ncclSocketToString(&sock->addr, line, 0));
     return ncclSystemError;
   }
   return ncclSuccess;
diff --git a/src/proxy.cc b/src/proxy.cc
index d6fe309..db36b9c 100644
--- a/src/proxy.cc
+++ b/src/proxy.cc
@@ -870,8 +870,6 @@ ncclResult_t ncclProxyShmUnlink(struct ncclComm* comm) {
 
 static ncclResult_t proxyConnInit(struct ncclProxyLocalPeer* peer, struct ncclProxyConnectionPool* connectionPool, struct ncclComm* comm) {
   struct ncclSocket* sock = &peer->sock;
-  char buf[SOCKET_NAME_MAXLEN+1];
-  buf[SOCKET_NAME_MAXLEN] = '\0';
   int id;
   struct ncclProxyConnection* connection;
   NCCLCHECK(ncclProxyNewConnection(connectionPool, &id));
@@ -889,8 +887,7 @@ static ncclResult_t proxyConnInit(struct ncclProxyLocalPeer* peer, struct ncclPr
     struct ncclProxyProgressState* state = &comm->proxyState.progressState;
     NCCLCHECK(ncclSocketSend(sock, state->opsPoolShmSuffix, sizeof("XXXXXX")-1));
   }
-  buf[SOCKET_NAME_MAXLEN] = '\0';
-  INFO(NCCL_NET, "New proxy %s connection %d from %s, transport %d", connection->send ? "send":"recv", id, ncclSocketToString(&sock->addr, buf), connection->transport);
+  INFO(NCCL_NET, "New proxy %s connection %d from local rank %d, transport %d", connection->send ? "send":"recv", id, connection->localRank, connection->transport);
   return ncclSuccess;
 }
 
diff --git a/src/transport/net_ib.cc b/src/transport/net_ib.cc
index 0a006de..25c589e 100644
--- a/src/transport/net_ib.cc
+++ b/src/transport/net_ib.cc
@@ -995,7 +995,7 @@ ncclResult_t ncclIbIsend(void* sendComm, void* data, int size, int tag, void* mh
     if (size > slots[r].size || slots[r].size < 0 || slots[r].addr == 0 || slots[r].rkey == 0) {
       char line[SOCKET_NAME_MAXLEN+1];
       WARN("NET/IB : req %d/%d tag %x peer %s collective mismatch error local size %d remote %d addr %lx rkey %x",
-          r, nreqs, tag, ncclSocketToString(&comm->sock.addr, line), size, slots[r].size, slots[r].addr, slots[r].rkey);
+          r, nreqs, tag, ncclSocketToString(&comm->sock.addr, line, 0), size, slots[r].size, slots[r].addr, slots[r].rkey);
       return ncclInternalError;
     }
     struct ncclIbRequest* req;
diff --git a/src/transport/net_socket.cc b/src/transport/net_socket.cc
index d92c46f..8396179 100644
--- a/src/transport/net_socket.cc
+++ b/src/transport/net_socket.cc
@@ -500,7 +500,7 @@ ncclResult_t ncclSocketTest(void* request, int* done, int* size) {
     // Check size is less or equal to the size provided by the user
     if (r->op == NCCL_SOCKET_RECV && data > r->size) {
       char line[SOCKET_NAME_MAXLEN+1];
-      WARN("NET/Socket : peer %s message truncated : receiving %d bytes instead of %d", ncclSocketToString(&r->ctrlSock->addr, line), data, r->size);
+      WARN("NET/Socket : peer %s message truncated : receiving %d bytes instead of %d", ncclSocketToString(&r->ctrlSock->addr, line, 0), data, r->size);
       return ncclInternalError;
     }
     r->size = data;