Set default value of enable-timestamps to false.

babeld.man

@@ -331,15 +331,9 @@ infinity, this can be set to a fairly large value, unless significant
 packet loss is expected.  The default is four times the hello interval.
 .TP
 .BR enable\-timestamps " {" true | false }
-This specifies whether we should send timestamps with each Hello and
-IHU message, in order to compute RTTs.  The overhead is about 8 bytes
-per message.  When set to
-.BR false ,
-the behaviour on this interface is identical to a non-RTT-aware
-babeld.  Namely, we are unable to compute RTTs, and our neighbours on
-this interface are also unable to compute RTTs to us.  The default is
-.B true
-for all interfaces.
+Enable sending timestamps with each Hello and IHU message in order to
+compute RTT values.  The default is
+.BR false .
 .TP
 .BI rtt\-exponential\-decay " decay"
 This specifies the decay factor for the exponential moving average of

interface.c

@@ -293,6 +293,9 @@ interface_up(struct interface *ifp, int up)
         if(IF_CONF(ifp, faraway) == CONFIG_YES)
             ifp->flags |= IF_FARAWAY;
 
+        if(IF_CONF(ifp, enable_timestamps) == CONFIG_YES)
+            ifp->enable_timestamps = 1;
+
         if(IF_CONF(ifp, hello_interval) > 0)
             ifp->hello_interval = IF_CONF(ifp, hello_interval);
         else if((ifp->flags & IF_WIRED))
@@ -305,9 +308,6 @@ interface_up(struct interface *ifp, int up)
             IF_CONF(ifp, update_interval) :
            ifp->hello_interval * 4;
 
-        ifp->enable_timestamps =
-            (IF_CONF(ifp, enable_timestamps) == CONFIG_NO) ? 0 : 1;
-
         ifp->rtt_exponential_decay =
             IF_CONF(ifp, rtt_exponential_decay) > 0 ?
             IF_CONF(ifp, rtt_exponential_decay) : 42;