Back to bug 2108212

Who When What Removed Added
Red Hat One Jira (issues.redhat.com) 2022-07-18 15:54:23 UTC Link ID Red Hat Issue Tracker OSP-17675
Eran Kuris 2022-07-20 15:05:59 UTC Keywords AutomationBlocker, Regression
James Smith 2022-07-21 13:22:22 UTC CC jamsmith
Miro Tomaska 2022-07-21 13:22:31 UTC Assignee rhos-maint mtomaska
CC mtomaska
James Smith 2022-07-21 13:23:28 UTC Docs Contact jamsmith
Miro Tomaska 2022-08-03 03:26:01 UTC Keywords Regression Triaged
Priority unspecified high
Bernard Cafarelli 2022-08-04 14:59:30 UTC Status NEW ASSIGNED
Mike Burns 2022-08-11 12:20:40 UTC CC mburns
Eran Kuris 2023-06-13 13:37:19 UTC Target Release --- 17.1
Target Milestone --- ga
RHEL Program Management 2023-06-13 13:37:26 UTC Target Release 17.1 17.0 17.0 17.1
James Smith 2023-06-15 00:57:09 UTC Flags needinfo?(rsafrono) needinfo?(mtomaska)
RHEL Program Management 2023-06-15 00:57:20 UTC Target Release 17.1 17.0 17.0 17.1
Roman Safronov 2023-06-15 08:22:49 UTC Flags needinfo?(rsafrono)
RHEL Program Management 2023-06-15 08:22:58 UTC Target Release 17.1 17.0 17.0 17.1
Lukas Svaty 2023-06-16 08:44:02 UTC Flags needinfo?(ekuris)
CC ekuris, lsvaty
RHEL Program Management 2023-06-16 08:44:13 UTC Target Release 17.1 17.0 17.0 17.1
Miro Tomaska 2023-06-16 20:06:08 UTC Doc Text Cause: The Router Advertisment daemon (radvd) for IPv6 is stopped during migration process

Consequence: When radvd daemon is stopped, the IPv6 router advertisments are no longer broadcasted which results in connection loss to VMs over an IPv6. IPv6 communication is automatically restored once new ML2/OVN services are first started.

Workaround (if any):
If constant connection to VMs is required during migration, it is advised to use IPv4. One note, even with IPv4 some pocket can occur but it should no be continous outage.

Result: No connection with VMs over IPv6 for the duration when ML2/OVS agents are stopped until ML2/OVN services are started. Depending on the size of enviroment that can last couple of minutes.
Doc Type If docs needed, set a value Known Issue
Flags needinfo?(mtomaska)
RHEL Program Management 2023-06-16 20:06:19 UTC Target Release 17.1 17.0 17.0 17.1
Eran Kuris 2023-06-18 11:41:54 UTC Flags needinfo?(ekuris)
RHEL Program Management 2023-06-18 11:42:03 UTC Target Release 17.1 17.0 17.0 17.1
James Smith 2023-06-22 15:48:11 UTC Doc Text Cause: The Router Advertisment daemon (radvd) for IPv6 is stopped during migration process

Consequence: When radvd daemon is stopped, the IPv6 router advertisments are no longer broadcasted which results in connection loss to VMs over an IPv6. IPv6 communication is automatically restored once new ML2/OVN services are first started.

Workaround (if any):
If constant connection to VMs is required during migration, it is advised to use IPv4. One note, even with IPv4 some pocket can occur but it should no be continous outage.

Result: No connection with VMs over IPv6 for the duration when ML2/OVS agents are stopped until ML2/OVN services are started. Depending on the size of enviroment that can last couple of minutes.
If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.

The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.

To avoid the problem, use IPv4 instead.
RHEL Program Management 2023-06-22 15:48:21 UTC Target Release 17.1 17.0 17.0 17.1
James Smith 2023-06-22 15:55:35 UTC Doc Text If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.

The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.

To avoid the problem, use IPv4 instead.
If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.

The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.

To avoid the potential disruption, use IPv4 instead.
RHEL Program Management 2023-06-22 15:55:46 UTC Target Release 17.1 17.0 17.0 17.1
James Smith 2023-06-22 16:04:34 UTC Doc Text If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.

The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.

To avoid the potential disruption, use IPv4 instead.
If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
RHEL Program Management 2023-06-22 16:04:44 UTC Target Release 17.1 17.0 17.0 17.1
James Smith 2023-06-22 16:06:14 UTC Doc Text If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services are started. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services start. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
RHEL Program Management 2023-06-22 16:06:22 UTC Target Release 17.1 17.0 17.0 17.1
Eran Kuris 2023-06-25 09:18:37 UTC Keywords AutomationBlocker Automation
RHEL Program Management 2023-06-25 09:18:48 UTC Target Release 17.1 17.0 17.0 17.1
Eran Kuris 2023-06-25 09:19:20 UTC Severity high medium
RHEL Program Management 2023-06-25 09:19:31 UTC Target Release 17.1 17.0 17.0 17.1
Eran Kuris 2023-06-25 09:20:35 UTC Target Milestone ga z1
RHEL Program Management 2023-06-25 09:20:45 UTC Target Release 17.1 17.0 17.0 17.1
Paul Grist 2023-06-27 13:03:50 UTC CC pgrist
RHEL Program Management 2023-06-27 13:03:59 UTC Target Release 17.1 17.0 17.0 17.1
Miro Tomaska 2023-06-28 18:42:14 UTC Flags needinfo?(jamsmith)
RHEL Program Management 2023-06-28 18:42:23 UTC Target Release 17.1 17.0 17.0 17.1
Bernard Cafarelli 2023-06-29 14:45:17 UTC CC bcafarel
James Smith 2023-07-03 13:16:09 UTC Doc Text If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVN services start. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVS services are stopped. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
Bernard Cafarelli 2023-08-01 07:26:53 UTC Target Milestone z1 z2
Miro Tomaska 2023-08-01 13:22:43 UTC Link ID Github RedHatCRE/znoyder/pull/147/commits/7deb69f37eac8094e267ecebb20b307d448342c0#diff-6238496c8bf4dec73b0edd0fd1404623e1515bcc8a2c4cb5f1acb3d824eec93c
Miro Tomaska 2023-08-01 13:23:02 UTC Link ID Github RedHatCRE/znoyder/pull/147/commits/7deb69f37eac8094e267ecebb20b307d448342c0#diff-6238496c8bf4dec73b0edd0fd1404623e1515bcc8a2c4cb5f1acb3d824eec93c
Ian Frangs 2023-08-03 15:46:23 UTC Flags needinfo?(mtomaska)
Miro Tomaska 2023-08-04 19:35:09 UTC Flags needinfo?(mtomaska)
Miro Tomaska 2023-08-04 19:43:39 UTC Status ASSIGNED ON_DEV
Ian Frangs 2023-08-11 11:34:17 UTC Doc Text If you use IPv6 to connect to VM instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVS services are stopped. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in VM instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
If you use IPv6 to connect to instances during migration to the OVN mechanism driver, connection to the instances might be disrupted for up to several minutes when the ML2/OVS services are stopped. To avoid this, use IPv4 instead.
+
The router advertisement daemon `radvd` for IPv6 is stopped during migration to the OVN mechanism driver. While `radvd` is stopped, router advertisements are no longer broadcast. This broadcast interruption results in instance connection loss over IPv6. IPv6 communication is automatically restored once the new ML2/OVN services start.
+
To avoid the potential disruption, use IPv4 instead.
CC ifrangs
Ian Frangs 2023-08-11 16:45:10 UTC CC ifrangs

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