RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Created attachment 1406879 [details]
messages log

Description of problem:
'lldpad: recvfrom(Event interface): No buffer space available' errors in /var/log/messages

This errors appears in the messages log when rebooting the host or when creating a bond for example. As well device is connected - 

ar 11 14:26:14 camel-vdsa NetworkManager[852]: <info>  [1520771174.2933] device (bond0.163): carrier: link connected
Mar 11 14:26:14 camel-vdsa lldpad: recvfrom(Event interface): No buffer space available


Mar 11 14:26:14 camel-vdsa kernel: IPv6: ADDRCONF(NETDEV_CHANGE): net-2: link becomes ready
Mar 11 14:26:14 camel-vdsa lldpad: recvfrom(Event interface): No buffer space available
Mar 11 14:26:14 camel-vdsa NetworkManager[852]: <info>  [1520771174.6948] device (net-2): carrier: link connected


Version-Release number of selected component (if applicable):
lldpad-1.0.1-3.git036e314.el7.x86_64
kernel-3.10.0-860.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Create bond with vlan bridge on top of him for example or break a bond

Actual results:
lldpad errors in messages log

Does this issue lead to lldpad crashing occasionaly?

Created attachment 1507269 [details]
02250919 agent log

Created attachment 1507270 [details]
02250919 broker log

Created attachment 1507271 [details]
02250919 messages log

Created attachment 1507285 [details]
02250919 vdsm log

Created attachment 1764162 [details]
1.0.1 with setsockopt fix

This fix includes the upstream setsockopt fix.