Apologies for this late follow-up. I have spent an entire day going through the patches again, checking again the changes made on Friday. I had missed one or two instances of skb_get_timestamp, these were better hidden. There are now no more left and the patch set has been compile tested on 5 different machines. Furthermore, I found a bug in the computation of CCID3 elapsed time when sending feedback, it is one of the older bugs and had not occurred to anyone before. The problem is that the `elapsed time' reported by the receiver is merely the time difference between calling the functions rx_packet_recv() and rx_send_feedback(). This amounts on the average to 50 .. 100 usec. With regard to RTT estimation, this is almost entirely useless. Following is therefore a patch which tackles this problem with an alternative approach, I believe it is a bit better. I have left in the clean-up operation of removing the last instance of skb_get_timestamp, hope that this is ok. Due to the patch inter-dependencies, this patch is between the others, uploaded as 10e_CCID3-TIMESTAMP-FIX.diff Thanks. - To unsubscribe from this list: send the line "unsubscribe dccp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html