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Bug 1716438

Summary: nmcli con up fails for auto-activated VLAN interfaces that use UUID as parent
Product: Red Hat Enterprise Linux 7 Reporter: Till Maas <till>
Component: NetworkManagerAssignee: Beniamino Galvani <bgalvani>
Status: CLOSED ERRATA QA Contact: Desktop QE <desktop-qa-list>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.0CC: atragler, bgalvani, fgiudici, lrintel, pasik, rkhan, sukulkar, thaller, vbenes
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: NetworkManager-1.18.4-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-03-31 20:07:59 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:

Description Till Maas 2019-06-03 14:05:36 UTC
Description of problem:


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


How reproducible:
always


Steps to Reproduce:
cat > 'reproduce_nmcli_vlan_autoconnect_bug.sh' <<EOF
parent_interface=tst83
vlan_interface="${parent_interface}.101"

ip link show "${parent_interface}" &>/dev/null || ip link add "${parent_interface}" type veth peer "peer${parent_interface}"

parent_uuid="$(nmcli con add type ethernet ifname "${parent_interface}" con-name "${parent_interface}" ipv4.method disabled ipv6.method ignore autoconnect yes | cut -d '(' -f 2 | cut -d ')' -f 1)"

nmcli con add type vlan ifname "${vlan_interface}" dev "${parent_uuid}" id 101 autoconnect yes connection.id "${vlan_interface}"

systemctl restart NetworkManager

nmcli con up "${vlan_interface}"

exit 0
# cleanup:
nmcli con del "${parent_interface}" "${vlan_interface}"; nmcli dev delete "${parent_interface}"
EOF

bash reproduce_nmcli_vlan_autoconnect_bug.sh


Actual results:
Failed to find a compatible device for this connection

Expected results:
Should activate the connection

Additional info:
Using the interface name instead of the UUID works.

Comment 2 Till Maas 2019-06-03 15:08:40 UTC
Forgot to mention that this breaks the network system role: https://github.com/linux-system-roles/network/issues/102

Comment 3 Beniamino Galvani 2019-06-03 15:17:37 UTC
Should be fixed by:

https://gitlab.freedesktop.org/NetworkManager/NetworkManager/merge_requests/176

Note that the veth peer must be up so that tst83 gets carrier and can autoactivate.

Comment 7 errata-xmlrpc 2020-03-31 20:07:59 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, 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-2020:1162