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Maniphest T6833

Firewall rate limit is improperly handled
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Description

SUMMARY

Firewall rate limit is improperly handled. While a correct configuration command is produced, it is not properly parsed from the current configuration and therefore not properly idempotent.

OS / ENVIRONMENT
VyOS 1.3

STEPS TO REPRODUCE
Execute the following configuration rule:

vyos.vyos.vyos_firewall_rules:
  state: merged
  config:
    - afi: ipv6
      rule_sets:
        - name: WAN-ROUTER6
          default_action: drop
          rules:
            - number: 20
              action: accept
              description: Allow ICMP
              limit:
                burst: 1
                rate:
                  number: 10
                  unit: second
              protocol: icmpv6

EXPECTED RESULTS
I expect either the firewall rule to be created as described or for nothing to happen if it already exists

set firewall ipv6-name WAN-ROUTER6 rule 20 action 'accept'
set firewall ipv6-name WAN-ROUTER6 rule 20 description 'Allow ICMP'
set firewall ipv6-name WAN-ROUTER6 rule 20 limit burst '1'
set firewall ipv6-name WAN-ROUTER6 rule 20 limit rate '10/second'
set firewall ipv6-name WAN-ROUTER6 rule 20 protocol 'icmpv6'

ACTUAL RESULTS
If executed on a target that already has a matching rule, this will perform the following command redundantly:

set firewall ipv6-name WAN-ROUTER6 rule 20 limit rate 10/second

If executed on a target with a matching rule that does not have a limit section at all, executing the playbook throws an error:

MSG:

MODULE FAILURE
See stdout/stderr for the exact error


MODULE_STDERR:

'limit'

Details

Version
4.1.0
Is it a breaking change?
Unspecified (possibly destroys the router)
Issue type
Bug (incorrect behavior)