On Sun, Oct 22, 2017 at 04:04:30PM +0200, Mike Belopuhov wrote: > > If this is as expected, OK job@ > > It's setting the option in my build here: > > 15:55:20.336682 fe:e1:bb:d1:a2:f0 fe:e1:ba:d0:55:1e 0800 78: \ > 10.50.50.34.17078 > 10.50.50.1.80: S [tcp sum ok] 1313610867:1313610867(0) \ > win 16384 <mss 1460,nop,nop,sackOK,nop,wscale 6,nop,nop,timestamp > 3624645505 0> \ > (DF) (ttl 64, id 25292, len 64)
I went back and tested again, but with a different packetsniffer. You were right. I now question the tool I used to observe this traffic on a middle box is giving me correct output. I can confirm there is no difference observable with tcpdump between miniroot ftp(1) and normal ftp(1). SACK is set in both contexts. All good! :) Kind regards, Job
