In our testing, VMs frequently send out IPv6 neighbor discovery packets (the v6 equivalent of ARP) during boot. When the OVS Quantum plugin is running in tunnel mode (new default), this causes OVS to crash and wipe all flow state from its configuration.
I can put you in touch with the the appropriate OVS developer if you like, as we both work at Nicira.
Hi Adam, James,
Thanks for the quick response.
The upstream change is here: http:// openvswitch. org/cgi- bin/gitweb. cgi?p=openvswit ch;a=commit; h=11f84dce005dd 14a374ab2ef5f8c 25bcf8285a36
In our testing, VMs frequently send out IPv6 neighbor discovery packets (the v6 equivalent of ARP) during boot. When the OVS Quantum plugin is running in tunnel mode (new default), this causes OVS to crash and wipe all flow state from its configuration.
I can put you in touch with the the appropriate OVS developer if you like, as we both work at Nicira.