Bug 1875727

Summary: [ovn-controller] "MLD Querier enabled with invalid IPv6 src address" log incorrectly displayed when IPv4 querier is enabled.
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Dumitru Ceara <dceara>
Component: ovn2.13Assignee: Dumitru Ceara <dceara>
Status: CLOSED ERRATA QA Contact: ying xu <yinxu>
Severity: medium Docs Contact:
Priority: medium    
Version: FDP 20.ECC: ctrautma, jishi, ralongi
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Last Closed: 2020-10-27 09:49:14 UTC Type: Bug
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Description Dumitru Ceara 2020-09-04 08:13:48 UTC 
Description of problem:

The "MLD Querier enabled with invalid IPv6 src address" log is incorrectly displayed in ovn-controller when IGMP and IGMP querier are enabled and an IPv4 source address is configured for the logical switch.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Configure a logical switch and bind one port to an OVN hv.
2. Enable mcast_snoop and mcast_querier on the logical switch. Also configure a valid source ethernet and IPv4 address for queries.

Actual results:
ovn-controller logs show:
"MLD Querier enabled with invalid IPv6 src address".

Expected results:
Single stack IP multicast configuration is valid and no warning log should be generated.

Additional info:
Fixed upstream by: https://github.com/ovn-org/ovn/commit/d6d59911412edc20c40c026a1bb8c48ef01800fb
Comment 5 ying xu 2020-09-30 04:14:59 UTC 
reproduced on 
# rpm -qa|grep ovn
ovn2.13-host-2.13.0-39.el8fdp.x86_64
ovn2.13-2.13.0-39.el8fdp.x86_64
ovn2.13-central-2.13.0-39.el8fdp.x86_64

# ovn-sbctl list ip_multicast
_uuid               : 5b759662-998d-4828-9d89-9be982ffd0be
datapath            : 3e731af0-b41c-4737-a0bd-681ea009a3ea
enabled             : true
eth_src             : "00:00:00:00:00:05"
idle_timeout        : 60
ip4_src             : "42.42.42.5"
ip6_src             : ""
querier             : true
query_interval      : 30
query_max_resp      : 2
seq_no              : 0
table_size          : 2048

2020-09-30T04:05:20.706Z|00019|pinctrl|WARN|MLD Querier enabled with invalid IPv6 src address
2020-09-30T04:05:20.708Z|00020|pinctrl|WARN|MLD Querier enabled with invalid IPv6 src address

# ovn-sbctl list ip_multicast
_uuid               : 5b759662-998d-4828-9d89-9be982ffd0be
datapath            : 3e731af0-b41c-4737-a0bd-681ea009a3ea
enabled             : true
eth_src             : "00:00:00:00:00:05"
idle_timeout        : 60
ip4_src             : ""
ip6_src             : "fe80::1"
querier             : true
query_interval      : 30
query_max_resp      : 2
seq_no              : 0
table_size          : 2048

2020-09-30T04:11:21.063Z|00035|pinctrl|WARN|IGMP Querier enabled with invalid IPv4 src address
2020-09-30T04:12:21.122Z|00036|pinctrl|WARN|Dropped 47 log messages in last 60 seconds (most recently, 5 seconds ago) due to excessive rate
2020-09-30T04:12:21.122Z|00037|pinctrl|WARN|IGMP Querier enabled with invalid IPv4 src address


verified on version:
# rpm -qa|grep ovn
ovn2.13-20.09.0-1.el8fdp.x86_64
ovn2.13-host-20.09.0-1.el8fdp.x86_64
ovn2.13-central-20.09.0-1.el8fdp.x86_64

# ovn-nbctl show
switch a12676a0-da96-44af-9809-b610f8f960e1 (ls)
    port vm2
        addresses: ["00:00:00:00:00:02"]
    port vm3
        addresses: ["00:00:00:00:00:03"]
    port vm1
        addresses: ["00:00:00:00:00:01"]
#ovn-nbctl set logical_switch ls other_config:mcast_query_interval=30 other_config:mcast_eth_src=00:00:00:00:00:05 other_config:mcast_ip6_src=fe80::1  other_config:mcast_idle_timeout=60 other_config:mcast_query_max_response=2
#ovn-nbctl set logical_switch ls other_config:mcast_querier=true other_config:mcast_snoop=true

#ovn-sbctl list ip_multicast'
_uuid               : c077ef12-10ee-4dad-93c3-62d56a5bddb3
datapath            : 42810a54-06b8-426d-bc65-6a0d163de77d
enabled             : true
eth_src             : "00:00:00:00:00:05"
idle_timeout        : 60
ip4_src             : ""
ip6_src             : "fe80::1"
querier             : true
query_interval      : 30
query_max_resp      : 2
seq_no              : 0
table_size          : 2048

#cat /var/log/ovn/ovn-controller.log|grep "IGMP Querier enabled with invalid IPv4 src address"        ------------no warn


only set ipv4_src:


ovn-sbctl list ip_multicast'
_uuid               : aea23e29-f4fa-43f1-b51c-cd2b22ae0132
datapath            : 08b9a068-1644-4fb4-a33c-8b64586189fc
enabled             : true
eth_src             : "00:00:00:00:00:05"
idle_timeout        : 60
ip4_src             : "42.42.42.5"
ip6_src             : ""
querier             : true
query_interval      : 30
query_max_resp      : 2
seq_no              : 0
table_size          : 2048

#cat /var/log/ovn/ovn-controller.log|grep "MLD Querier enabled with invalid IPv6 src address"        ------------no warn
Comment 7 errata-xmlrpc 2020-10-27 09:49:14 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (ovn2.13 bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:4356