<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="" style="font-size: 14px;">Hi all,</div><div class="" style="font-size: 14px;">I’ve been having a constant noisy signal lately using jacktrip 1.1 and jack audio 0.92 beta3 on El Capitan.</div><div class="" style="font-size: 14px;">No noise running locally; but always from U.S. to China on ipv6. We’ve even had trouble with initializing an </div><div class="" style="font-size: 14px;">8 channel stream; had to go with 4. Never had this trouble before.</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">The connection is virtually jitter-less with 0 packet loss and 80M in the clear.</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">doing some experiments with jacktrip and Wireshark today - all on the local network.</div><div class="" style="font-size: 14px;">I find that with larger data chunks (over about 1500k), the packets can be fragmented 2 or 3 times or more.</div><div class="" style="font-size: 14px;">Where does the fragmenting happen, on sender side? In transit?</div><div class="" style="font-size: 14px;">Would the machine ever have any problem ‘reassembling” the chunks?</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">Thanks,</div><div class="" style="font-size: 14px;">Ken</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><div class="" style="font-size: 15px;"><b class="">stereo 48k 24bit connection:</b></div><div class="" style="font-size: 15px;"><b class="">buffer 512</b></div><div class="" style="font-size: 13px;"><b class="">3 FRAGS</b></div><div class="" style="font-size: 18px;"><br class=""></div></div><div class="" style="font-size: 14px;"><b class="">OVER IPV6</b></div><div class="" style="font-size: 14px;"><br class=""></div><span class="" style="font-size: 14px;">315345</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">      </span><span class="" style="font-size: 14px;">2454.541857</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">       </span><span class="" style="font-size: 14px;">2001:da8:22b:1506:12dd:b1ff:febd:8a2e</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">     </span><span class="" style="font-size: 14px;">2001:da8:22b:1506:ca2a:14ff:fe34:2beb</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">     </span><span class="" style="font-size: 14px;">IPv6</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">      </span><span class="" style="font-size: 14px;">1510</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">      </span><span class="" style="font-size: 14px;">IPv6 fragment (off=0 more=y ident=0xf68b8b47 nxt=17)</span><span class="Apple-tab-span" style="font-size: 14px; white-space: pre;">              </span><div class="" style="font-size: 14px;">315346    2454.541861     2001:da8:22b:1506:12dd:b1ff:febd:8a2e   2001:da8:22b:1506:ca2a:14ff:fe34:2beb                    IPv6 1510         IPv6 fragment (off=1448 more=y ident=0xf68b8b47 nxt=17)  </div><div class="" style="font-size: 14px;">315347<span class="Apple-tab-span" style="white-space: pre;">     </span>2454.541863<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>262<span class="Apple-tab-span" style="white-space: pre;">       </span>         4464 → 4464  Len=3088<span class="Apple-tab-span" style="white-space: pre;">    </span>4464<span class="Apple-tab-span" style="white-space: pre;">      </span>4464</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><b class="">OVER IPV4</b></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">488313<span class="Apple-tab-span" style="white-space: pre;"> </span>2895.589371<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;"> </span>                                                                IPv4 1514<span class="Apple-tab-span" style="white-space: pre;">    </span>Fragmented IP protocol (proto=UDP 17, off=0, ID=2841) [Reassembled in #488315]<span class="Apple-tab-span" style="white-space: pre;">            </span></div><div class="" style="font-size: 14px;">488314<span class="Apple-tab-span" style="white-space: pre;">       </span>2895.589383<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;">                                                                 </span>IPv4<span class="Apple-tab-span" style="white-space: pre;">      </span>1514        Fragmented IP protocol (proto=UDP 17, off=1480, ID=2841) [Reassembled in #488315]<span class="Apple-tab-span" style="white-space: pre;">         </span></div><div class="" style="font-size: 14px;">488315<span class="Apple-tab-span" style="white-space: pre;">       </span>2895.589385<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;">                                                                 </span>UDP 170<span class="Apple-tab-span" style="white-space: pre;">      </span>        4464 → 4464  Len=3088<span class="Apple-tab-span" style="white-space: pre;">     </span>4464<span class="Apple-tab-span" style="white-space: pre;">      </span>4464</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><div class="">[3 IPv4 Fragments (3096 bytes): #744530(1480), #744531(1480), #744532(136)]</div><div class="">    [Frame: 744530, payload: 0-1479 (1480 bytes)]</div><div class="">    [Frame: 744531, payload: 1480-2959 (1480 bytes)]</div><div class="">    [Frame: 744532, payload: 2960-3095 (136 bytes)]</div><div class="">    [Fragment count: 3]</div><div class="">    [Reassembled IPv4 length: 3096]</div><div class="">    [Reassembled IPv4 data: 117011700c18119cc7a5b325e02f050002a7000203180200...]</div></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><b class="">MONO 44k 16 bit, buffer 128 - <span class="" style="font-size: 11px;">NO FRAGS</span></b></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">878806<span class="Apple-tab-span" style="white-space: pre;">      </span>3832.932229<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>314<span class="Apple-tab-span" style="white-space: pre;">       </span>4464 → 4464  Len=272<span class="Apple-tab-span" style="white-space: pre;">       </span>4464<span class="Apple-tab-span" style="white-space: pre;">      </span>4464</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">1006386<span class="Apple-tab-span" style="white-space: pre;">        </span>4103.078745<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>334<span class="Apple-tab-span" style="white-space: pre;">       </span>4465 → 4465  Len=272<span class="Apple-tab-span" style="white-space: pre;">       </span>4465<span class="Apple-tab-span" style="white-space: pre;">      </span>4465</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><b class="">STEREO 16 bit, buffer 128 - <span class="" style="font-size: 11px;">NO FRAGS</span></b></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">1088352<span class="Apple-tab-span" style="white-space: pre;"> </span>4253.388686<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>590<span class="Apple-tab-span" style="white-space: pre;">       </span>4464 → 4464  Len=528<span class="Apple-tab-span" style="white-space: pre;">       </span>4464<span class="Apple-tab-span" style="white-space: pre;">      </span>4464</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><b class=""><br class=""></b></div><div class="" style="font-size: 14px;"><b class="">Buffer 256 16bit - <span class="" style="font-size: 12px;">NO FRAGS</span></b></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">1267127<span class="Apple-tab-span" style="white-space: pre;">    </span>4884.016193<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>1102<span class="Apple-tab-span" style="white-space: pre;">      </span>4469 → 4469  Len=1040<span class="Apple-tab-span" style="white-space: pre;">      </span>4469<span class="Apple-tab-span" style="white-space: pre;">      </span>4469</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><b class="">Buffer 256 24bit -<span class="" style="font-size: 11px;"> 2 FRAGS</span></b></div><div class="" style="font-size: 14px;"><b class=""><br class=""></b></div><div class="" style="font-size: 14px;">1326725<span class="Apple-tab-span" style="white-space: pre;">       </span>5095.511528<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>IPv6<span class="Apple-tab-span" style="white-space: pre;">      </span>1510<span class="Apple-tab-span" style="white-space: pre;">      </span>IPv6 fragment (off=0 more=y ident=0x486bd035 nxt=17)<span class="Apple-tab-span" style="white-space: pre;">              </span></div><div class="" style="font-size: 14px;">1326726<span class="Apple-tab-span" style="white-space: pre;">      </span>5095.511529<span class="Apple-tab-span" style="white-space: pre;">       </span>2001:da8:22b:1506:ca2a:14ff:fe34:2beb<span class="Apple-tab-span" style="white-space: pre;">     </span>2001:da8:22b:1506:12dd:b1ff:febd:8a2e<span class="Apple-tab-span" style="white-space: pre;">     </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>174<span class="Apple-tab-span" style="white-space: pre;">       </span>4471 → 4471  Len=1552<span class="Apple-tab-span" style="white-space: pre;">      </span>4471<span class="Apple-tab-span" style="white-space: pre;">      </span>4471</div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;"><br class=""></div><div class="" style="font-size: 14px;">1528363<span class="Apple-tab-span" style="white-space: pre;">      </span>5497.529358<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;">                                                                                                                 </span>IPv4<span class="Apple-tab-span" style="white-space: pre;">      </span>1514<span class="Apple-tab-span" style="white-space: pre;">      </span>Fragmented IP protocol (proto=UDP 17, off=0, ID=a448) [Reassembled in #1528364]<span class="Apple-tab-span" style="white-space: pre;">           </span></div><div class="" style="font-size: 14px;">1528364<span class="Apple-tab-span" style="white-space: pre;">      </span>5497.529361<span class="Apple-tab-span" style="white-space: pre;">       </span>10.1.8.32<span class="Apple-tab-span" style="white-space: pre;"> </span>10.1.8.39<span class="Apple-tab-span" style="white-space: pre;">                                                                                                                 </span>UDP<span class="Apple-tab-span" style="white-space: pre;">       </span>114<span class="Apple-tab-span" style="white-space: pre;">       </span>4473 → 4473  Len=1552<span class="Apple-tab-span" style="white-space: pre;">      </span>4473<span class="Apple-tab-span" style="white-space: pre;">      </span>4473</div></body></html>