LXC: Network tests in CI fail due to not receiving an IPv4 address

[theelliotm]

Relevant area(s)

Linux

Brief description of your issue

On the RHEL-10 LXC tests, containers aren't receiving IPv4 addresses, and all network tests fail.

Either documentation needs to be updated to reflect how a RHEL system should be configured to use bubblewrap, and/or the CI images need to be updated to reflect documentation.

Steps to reproduce

Run Scheduled Validation Tests under the nightly trigger.

Expected behavior

All bubblewrap containers receive IPv4 addresses.

Actual behavior

Bubblewrap containers are not receiving IPv4 addressses.

Received error in CI job:

Error: Container did not receive an IPv4 address within 30s; check that lxc-net/dnsmasq is running and able to assign one. A bridge offering only IPv6 leaves the container unable to reach the IPv4 destinations its policy names.
Container did not receive an IPv4 address within 30s; check that lxc-net/dnsmasq is running and able to assign one. A bridge offering only IPv6 leaves the container unable to reach the IPv4 destinations its policy names.
{"error":{"code":"backend_error","message":"Container did not receive an IPv4 address within 30s; check that lxc-net/dnsmasq is running and able to assign one. A bridge offering only IPv6 leaves the container unable to reach the IPv4 destinations its policy names."}}

for the following tests:

• LXC Network IPv6+CIDR
• LXC Network Invalid CIDR
• LXC Network Dual-Stack Hostname
• LXC Network CIDR Boundary
• LXC Network Enforcement
• LXC Network Schema 0.7
• LXC Network GA Egress (0.8)
• LXC Network 0.8 Omitted Network Section
• LXC Network 0.8 Deny-All Loopback
• LXC Network Deny Precedence
• LXC Network Proxy
• LXC Network Proxy Hostname (off-host)
• LXC Network Proxy Reuse
• LXC Network Preserve Policy
• LXC Network Reuse Tightening
• LXC Network Reuse Loosening
• LXC Inbound Default-Deny
• LXC Inbound Traffic
• LXC Network Legacy Default-Allow v0.8 Compatibility

[SohamDas2021]

Is this an LXC or Bwrap issue? The title and description confuse between the two backends? Failing tests are all LXCs.

"Either documentation needs to be updated to reflect how a RHEL system should be configured to use bubblewrap, and/or the CI images need to be updated to reflect documentation."

This is a test issue and needs no change to the product.