openstack/kolla-ansible
Code Issues Proposed changes

Add workaround to work with cirros image

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The cirros image uses an old dhcp client which does not work
properly with hardware that has checksum offload enabled.  Add
a bootp rule to rewrite the checksum via iptables.

Latest cirros 0.3.33 is afflicted by this bug.

Change-Id: Ibfd1f87af5d0bef9fcb1354121e76e4e0db8ab5e
This commit is contained in:
Steven Dake 2015-04-15 16:38:09 -07:00
parent 095fbd7d7c
commit 64a2cf40a5
1 changed files with 8 additions and 0 deletions
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8
docker/neutron/neutron-agents/config-scripts/config-dhcp-agent.sh
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@ -18,6 +18,14 @@ check_required_vars VERBOSE_LOGGING DEBUG_LOGGING MECHANISM_DRIVERS \
cfg=/etc/neutron/dhcp_agent.ini
neutron_conf=/etc/neutron/neutron.conf
# Workaround bug in dhclient in cirros images which does not correctly
# handle setting checksums of packets when using hardware with checksum
# offloading. See:
# https://www.rdoproject.org/forum/discussion/567/packstack-allinone-grizzly-cirros-image-cannot-get-a-dhcp-address-when-a-centos-image-can/p1
/usr/sbin/iptables -A POSTROUTING -t mangle -p udp --dport bootpc \
-j CHECKSUM --checksum-fill
if [[ ${MECHANISM_DRIVERS} =~ linuxbridge ]]; then
interface_driver="neutron.agent.linux.interface.BridgeInterfaceDriver"
elif [[ ${MECHANISM_DRIVERS} == "openvswitch" ]]; then