Enable v6 support

debian/rules

@@ -15,7 +15,7 @@ endif
 
 config.status: patch configure
 	dh_testdir
-	./configure --host=$(DEB_HOST_GNU_TYPE) --build=$(DEB_BUILD_GNU_TYPE) --prefix=/usr --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info --sysconfdir=/etc/ngircd --without-epoll --with-gnutls
+	./configure --host=$(DEB_HOST_GNU_TYPE) --build=$(DEB_BUILD_GNU_TYPE) --prefix=/usr --mandir=\$${prefix}/share/man --infodir=\$${prefix}/share/info --sysconfdir=/etc/ngircd --without-epoll --with-gnutls --enable-ipv6
 
 
 build: build-stamp