Hi Michal, By the way, I noticed ipv6 loopback IP addresses in your pcap. As I normally try to capture on nic where migration carried out, I thought of checking with you if your wireshark could dissect libvirt RPC in such pcap too (captured on a nic) ?. During migration, I do not see any traffic on loopback and I think it is expected, but thinking how you get those captured ?. Any pointers/suggestions ? Appreciating your help. Regards, Gowrishankar On Thursday 07 January 2016 04:48 PM, gowrishankar wrote:
Thank you Michal.
With your pcap, I could confirm that, libvirt dissector worked in my environment as well. Yes, it could be that, my pcap do not have libvirt rpc packets correctly though I would have expected. I am checking on it.
Regards, Gowrishankar
On Thursday 07 January 2016 03:51 PM, Michal Privoznik wrote:
On 07.01.2016 08:05, gowrishankar wrote:
Hi Michal, Thank you for your suggestion. My apologies that I took sometime to get back on further confirmation. Regrettably, my tshark is still unable to find libvirt payload inside packet capture, though it lists libvirt as a possible filter.
# rpm -ql libvirt-wireshark-1.2.9.3-2.fc21.x86_64 /usr/lib64/wireshark/plugins/1.12.5/libvirt.so
As I used wireshark 1.12.6 version, I created 1.12.6 directory under plugins and copied above .so. /usr/lib64/wireshark/plugins/1.12.6/libvirt.so
# tshark -G protocols | grep -i libvirt Libvirt libvirt libvirt
# tshark -r libvirt.pcap libvirt #
Interesting. This indeed may be that your pcap file does not contain any libvirt packets. Esp. if you tested it locally - if you haven't specified to use TCP stack, UNIX socket is used by default.
Are there any dependency between libvirt and wireshark dissector mechanism to co-exist and work together (ie. whether the above libvirt-wireshark missing some changes that dissector expecting ??). If you have sample pcap to recheck my wireshark/tshark, could you please share with me ? Sure:
https://mprivozn.fedorapeople.org/libvirt.pcap
$ tshark -r libvirt.pcap libvirt | tail -n1 89 29.520014062 ::1 -> ::1 Libvirt 114 Prog=REMOTE Proc=CONNECT_CLOSE Type=REPLY Serial=32 Status=OK
So I can get 89 libvirt packets from the dump.
Michal