** Changed in: charm-neutron-openvswitch
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1832021
Title:
Checksum drop of metadata traffic on isolated networks with DPDK
Status in OpenStack neutron-openvswitch charm:
Fix Released
Status in neutron:
New
Bug description:
When an isolated network using provider networks for tenants (meaning
without virtual routers: DVR or network node), metadata access occurs
in the qdhcp ip netns rather than the qrouter netns.
The following options are set in the dhcp_agent.ini file:
force_metadata = True
enable_isolated_metadata = True
VMs on the provider tenant network are unable to access metadata as
packets are dropped due to checksum.
When we added the following in the qdhcp netns, VMs regained access to
metadata:
iptables -t mangle -A OUTPUT -o ns-+ -p tcp --sport 80 -j CHECKSUM
--checksum-fill
It seems this setting was recently removed from the qrouter netns [0]
but it never existed in the qdhcp to begin with.
[0] https://review.opendev.org/#/c/654645/
Related LP Bug #1831935
See
https://bugs.launchpad.net/charm-neutron-openvswitch/+bug/1831935/comments/10
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