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When adding classless-static-route in extra_dhcp_opt for a port, neutron client
complains syntax error. For example,
$ neutron port-update --extra-dhcp-opt
opt_name="classless-static-route",opt_value="169.254.169.254/32,20.20.20.1"
port1
usage: neutron port-update [-h] [--request-format {json}] [--name NAME]
[--description DESCRIPTION]
[--fixed-ip subnet_id=SUBNET,ip_address=IP_ADDR]
[--device-id DEVICE_ID]
[--device-owner DEVICE_OWNER]
[--admin-state-up {True,False}]
[--security-group SECURITY_GROUP |
--no-security-groups]
[--extra-dhcp-opt EXTRA_DHCP_OPTS]
[--qos-policy QOS_POLICY | --no-qos-policy]
[--allowed-address-pair
ip_address=IP_ADDR[,mac_address=MAC_ADDR]
| --no-allowed-address-pairs]
[--dns-name DNS_NAME | --no-dns-name]
PORT
neutron port-update: error: argument --extra-dhcp-opt: invalid key-value
'20.20.20.1', expected format: key=value
Try 'neutron help port-update' for more information.
The reason is neutron client interprets the "," inside the opt_value as
a delimiter of key-value pairs for --extra-dhcp-opt.
The comma in the opt_value for classless-static-route is required because
the format of DHCP options in the opts file for dnsmasq is like:
tag:<tag_id_or_port_uuid>,option:classless-static-
route,169.254.169.254/32,20.20.20.1
** Affects: neutron
Importance: Undecided
Status: New
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Unable to add classless-static-route in extra_dhcp_opt extension
https://bugs.launchpad.net/bugs/1605421
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