diff --git a/src/ebusd/main.cpp b/src/ebusd/main.cpp
index 10f04419..202c2396 100644
--- a/src/ebusd/main.cpp
+++ b/src/ebusd/main.cpp
@@ -256,7 +256,7 @@ int main(int argc, char* argv[], char* envp[]) {
   }
 
   if (s_opt.logAreas != -1 || s_opt.logLevel != ll_COUNT) {
-    setFacilitiesLogLevel(1<<ll_COUNT, ll_none);
+    setFacilitiesLogLevel(1 << ll_COUNT, ll_none);
     setFacilitiesLogLevel(s_opt.logAreas, s_opt.logLevel);
   }
 
diff --git a/src/ebusd/main.h b/src/ebusd/main.h
index 250747e5..0747f255 100755
--- a/src/ebusd/main.h
+++ b/src/ebusd/main.h
@@ -37,7 +37,7 @@ namespace ebusd {
 
 /** A structure holding all program options. */
 typedef struct options {
-  const char* device;  //!< eBUS device (serial device or [udp:]ip:port) [/dev/ttyUSB0]
+  const char* device;  //!< eBUS device (serial device or [udp:]ip[:port]) [/dev/ttyUSB0]
   bool noDeviceCheck;  //!< skip serial eBUS device test
   bool readOnly;  //!< read-only access to the device
   bool initialSend;  //!< send an initial escape symbol after connecting device
@@ -79,7 +79,7 @@ typedef struct options {
   const char* accessLevel;  //!< default access level
   const char* aclFile;  //!< ACL file name
   bool foreground;  //!< run in foreground
-  bool enableHex;  //!< enable hex command
+  bool enableHex;  //!< enable hex/inject/answer commands
   bool enableDefine;  //!< enable define command
   const char* pidFile;  //!< PID file name [/var/run/ebusd.pid]
   uint16_t port;  //!< port to listen for command line connections [8888]
diff --git a/src/ebusd/main_args.cpp b/src/ebusd/main_args.cpp
index 1fad13b1..78f6590f 100755
--- a/src/ebusd/main_args.cpp
+++ b/src/ebusd/main_args.cpp
@@ -143,7 +143,7 @@ static const argDef argDefs[] = {
   {"device",         'd',      "DEV",      0, "Use DEV as eBUS device ("
       "prefix \"ens:\" for enhanced high speed device or "
       "\"enh:\" for enhanced device, with "
-      "\"IP:PORT\" for network device or "
+      "\"IP[:PORT]\" for network device or "
       "\"DEVICE\" for serial device"
       ") [/dev/ttyUSB0]"},
   {"nodevicecheck",  'n',      nullptr,    0, "Skip serial eBUS device test"},
@@ -193,7 +193,7 @@ static const argDef argDefs[] = {
   {"accesslevel",    O_ACLDEF, "LEVEL",    0, "Set default access level to LEVEL (\"*\" for everything) [\"\"]"},
   {"aclfile",        O_ACLFIL, "FILE",     0, "Read access control list from FILE"},
   {"foreground",     'f',      nullptr,    0, "Run in foreground"},
-  {"enablehex",      O_HEXCMD, nullptr,    0, "Enable hex command"},
+  {"enablehex",      O_HEXCMD, nullptr,    0, "Enable hex/inject/answer commands"},
   {"enabledefine",   O_DEFCMD, nullptr,    0, "Enable define command"},
   {"pidfile",        O_PIDFIL, "FILE",     0, "PID file name (only for daemon) [" PACKAGE_PIDFILE "]"},
   {"port",           'p',      "PORT",     0, "Listen for command line connections on PORT [8888]"},
@@ -205,11 +205,11 @@ static const argDef argDefs[] = {
   {nullptr,          0,        nullptr,    0, "Log options:"},
   {"logfile",        'l',      "FILE",     0, "Write log to FILE (only for daemon, empty string for using syslog) ["
       PACKAGE_LOGFILE "]"},
-  {"log",            O_LOG, "AREAS:LEVEL", 0, "Only write log for matching AREA(S) below or equal to LEVEL"
+  {"log",            O_LOG, "AREAS:LEVEL", 0, "Only write log for matching AREA(S) up to LEVEL"
       " (alternative to --logareas/--logevel, may be used multiple times) [all:notice]"},
   {"logareas",       O_LOGARE, "AREAS",    0, "Only write log for matching AREA(S): main|network|bus|update|other"
       "|all [all]"},
-  {"loglevel",       O_LOGLEV, "LEVEL",    0, "Only write log below or equal to LEVEL: error|notice|info|debug"
+  {"loglevel",       O_LOGLEV, "LEVEL",    0, "Only write log up to LEVEL: error|notice|info|debug"
       " [notice]"},
 
   {nullptr,          0,        nullptr,    0, "Raw logging options:"},
diff --git a/src/ebusd/mainloop.cpp b/src/ebusd/mainloop.cpp
index 6854fbf5..0b006390 100644
--- a/src/ebusd/mainloop.cpp
+++ b/src/ebusd/mainloop.cpp
@@ -1261,8 +1261,7 @@ result_t MainLoop::executeAnswer(const vector<string>& args, ostringstream* ostr
   } else if (dstAddress == SYN) {
     dstAddress = master ? m_address : getSlaveAddress(m_address);
   }
-  if (!m_protocol->setAnswer(srcAddress, dstAddress, id[0], id[1], id.data()+2
-  , id.size()-2, answer)) {
+  if (!m_protocol->setAnswer(srcAddress, dstAddress, id[0], id[1], id.data()+2, id.size()-2, answer)) {
     return RESULT_ERR_INVALID_ARG;
   }
   return RESULT_OK;
diff --git a/src/lib/ebus/protocol.cpp b/src/lib/ebus/protocol.cpp
index 376be810..1d80aee4 100644
--- a/src/lib/ebus/protocol.cpp
+++ b/src/lib/ebus/protocol.cpp
@@ -70,27 +70,28 @@ ProtocolHandler* ProtocolHandler::create(const ebus_protocol_config_t config,
     }
   }
   Transport* transport;
-  if (strchr(name, '/') == nullptr && strchr(name, ':') != nullptr) {
+  if (strchr(name, '/') == nullptr || strchr(name, ':') != nullptr) {
     char* in = strdup(name);
     bool udp = false;
     char* addrpos = in;
     char* portpos = strchr(addrpos, ':');
-    // support tcp:<ip>:<port> and udp:<ip>:<port>
+    // support tcp:<ip>[:<port>] and udp:<ip>[:<port>]
     if (portpos == addrpos+3 && (strncmp(addrpos, "tcp", 3) == 0 || (udp=(strncmp(addrpos, "udp", 3) == 0)))) {
       addrpos += 4;
       portpos = strchr(addrpos, ':');
     }
+    uint16_t port;
     if (portpos == nullptr) {
-      free(in);
-      return nullptr;  // invalid protocol or missing port
+      port = 9999;
+    } else {
+      result_t result = RESULT_OK;
+      port = (uint16_t)parseInt(portpos+1, 10, 1, 65535, &result);
+      if (result != RESULT_OK) {
+        free(in);
+        return nullptr;  // invalid port
+      }
+      *portpos = 0;
     }
-    result_t result = RESULT_OK;
-    uint16_t port = (uint16_t)parseInt(portpos+1, 10, 1, 65535, &result);
-    if (result != RESULT_OK) {
-      free(in);
-      return nullptr;  // invalid port
-    }
-    *portpos = 0;
     char* hostOrIp = strdup(addrpos);
     free(in);
     transport = new NetworkTransport(name, config.extraLatency, hostOrIp, port, udp);
diff --git a/src/lib/ebus/protocol.h b/src/lib/ebus/protocol.h
index f5fbdcec..85ddb101 100755
--- a/src/lib/ebus/protocol.h
+++ b/src/lib/ebus/protocol.h
@@ -56,7 +56,7 @@ namespace ebusd {
 
 /** settings for the eBUS protocol handler. */
 typedef struct ebus_protocol_config {
-  /** eBUS device string (serial device or [udp:]ip:port) with optional protocol prefix (enh: or ens:). */
+  /** eBUS device string (serial device or [udp:]ip[:port]) with optional protocol prefix (enh: or ens:). */
   const char* device;
   /** whether to skip serial eBUS device test. */
   bool noDeviceCheck;