<div style="text-align:right"><br></div>I have been debugging some weirdness for a while. You might want to do some captures on the latest cero and look at checksums. <br><br>An unreasonably high number of checksum issues seem to be happening, but there doesn't appear to be a whole lot of pattern to it, as yet.<br>
<br>I will simplify. I pinged locally and 8.8.8.8 and surfed the web, and a symptom is that some other routers can't ping sometimes nor access much of the internet beyond the gateway. They can always reach the gateway. <br>
<br>in the interim, the topology on this capture are<br><br>172.30.102.17 - laptop via ethernet to<br>172.20.102.1 - cerowrt 3.7.4-4 via ethernet to<br>172.20.6.1 - ubnt 3.3.8-26 via mesh to<br>172.20.142.11 - ubnt 3.7.4-4 via ethernet to<br>
* 192.168.100.1 - cerowrt 3.7.2 capture point (yes, updating that)<br>10.0.10.1 - comcast box (yes, double nat, fixing that)<br><br>I took a capture on the se00 interface<br><br>tcpdump -i se00 -w/tmp/yurt.cap host 172.20.102.17<br>
<br>and stuck that capture there:<br><br><a href="http://snapon.lab.bufferbloat.net/~d/yurt/yurt.cap">http://snapon.lab.bufferbloat.net/~d/yurt/yurt.cap</a><br><br>and then looked at it with wireshark with this filter<br>
<br>ip.checksum_bad == 1<br><br>and scratched my head at the error rate (about 1%) and the pattern (lack thereof)<br><br>I will simplify in the mroning<br><br>-- <br>Dave Täht<br><br>Fixing bufferbloat with cerowrt: <a href="http://www.teklibre.com/cerowrt/subscribe.html" target="_blank">http://www.teklibre.com/cerowrt/subscribe.html</a>