[878] Remove unused variables to build works.

src/bin/dhcp6/b10-dhcp6.8

@@ -21,8 +21,8 @@
 .SH "NAME"
 b10-dhcp6 \- DHCPv6 daemon in BIND10 architecture
 .SH "SYNOPSIS"
-.HP \w'\fBb10\-dhcp6\fR\ 'u
-\fBb10\-dhcp6\fR [\fB\-u\ \fR\fB\fIusername\fR\fR] [\fB\-v\fR]
+.HP \w'\fBb10\-dhcp6
+\fBb10\-dhcp6\fR [\fB\-v\fR]
 .SH "DESCRIPTION"
 .PP
 The

src/bin/dhcp6/dhcp6_srv.cc

@@ -40,7 +40,6 @@ Dhcpv6Srv::run() {
         pkt = IfaceMgr::instance().receive();
 
         if (pkt) {
-            Addr6 client = pkt->remote_addr_;
             cout << "Received " << pkt->data_len_ << " bytes, echoing back."
                  << endl;
             IfaceMgr::instance().send(*pkt);

src/bin/dhcp6/main.cc

@@ -61,22 +61,14 @@ usage() {
 int
 main(int argc, char* argv[]) {
     int ch;
-    const char* uid = NULL;
-    bool cache = true;
 
-    while ((ch = getopt(argc, argv, ":nu:v")) != -1) {
+    while ((ch = getopt(argc, argv, ":v")) != -1) {
         switch (ch) {
-        case 'n':
-            cache = false;
-            break;
-        case 'u':
-            uid = optarg;
-            break;
         case 'v':
             verbose_mode = true;
             isc::log::denabled = true;
             break;
-        case '?':
+        case ':':
         default:
             usage();
         }