Bug 1967632
| Summary: | NetworkManager gives up on dhcp4 when it gets dhcp6 lease | ||||||
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| Product: | OpenShift Container Platform | Reporter: | Michael Hrivnak <mhrivnak> | ||||
| Component: | RHCOS | Assignee: | Dusty Mabe <dustymabe> | ||||
| Status: | CLOSED DUPLICATE | QA Contact: | Michael Nguyen <mnguyen> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 4.8 | CC: | dornelas, dustymabe, jligon, keyoung, mrussell, nstielau | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2021-06-22 20:09:13 UTC | Type: | Bug | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
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This is a current known issue being worked on by the NetworkManager team. See https://bugzilla.redhat.com/show_bug.cgi?id=1928345#c14 In your case (since you don't need ipv6) you can also just use `ip=dchp` (see https://bugzilla.redhat.com/show_bug.cgi?id=1928345#c7). (In reply to Dusty Mabe from comment #3) > In your case (since you don't need ipv6) you can also just use `ip=dchp` > (see https://bugzilla.redhat.com/show_bug.cgi?id=1928345#c7). typo: `ip=dhcp` Thanks. I apparently don't have the ability to view that issue, but feel free to close this one as a duplicate if you think that makes sense. related upstream NetworkManager issue: https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/729 (In reply to Dusty Mabe from comment #2) > This is a current known issue being worked on by the NetworkManager team. > See https://bugzilla.redhat.com/show_bug.cgi?id=1928345#c14 That bug was closed as a duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1961666 I'll do the same here. *** This bug has been marked as a duplicate of bug 1961666 *** |
Created attachment 1788846 [details] boot log OCP Version at Install Time: quay.io/openshift-release-dev/ocp-release:4.8.0-fc.3-x86_64 RHCOS Version at Install Time: 48.84.202105062123-0 Platform: none Architecture: x86_64 What are you trying to do? What is your use case? Boot a minimal discovery live ISO created by assisted-installer (booting with libvirt on a RHEL 8.4 host), in order to add a worker to a cluster. libvirt is configured for bridge networking, so the VM is on my LAN. What happened? What went wrong or what did you expect? My local router seems to give out dhcp6 leases more quickly than dhcp4. During boot, NetworkManager appears to give up on the dhcp4 lease once it gets a dhcp6 lease. See the attached log at 21 seconds. The boot process then tries to retrieve the rootfs from mirror.openshift.com, but because we don't support ipv6 there yet and the system only has an ipv6 address, it gets stuck in a loop of endlessly failing to GET the rootfs. What are the steps to reproduce your issue? Please try to reduce these steps to something that can be reproduced with a single RHCOS node. I will attach the ignition that's embedded in the minimal ISO. I can work around this issue reliably by adding kernel argument "ipv6.disable=1".