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Bug 1812038

Summary: OVN is not adhering to DHCP Broadcast Bit in DHCPDISCOVER and sending only unicast DHCPOFFER
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Numan Siddique <nusiddiq>
Component: ovn2.13Assignee: Numan Siddique <nusiddiq>
Status: CLOSED ERRATA QA Contact: ying xu <yinxu>
Severity: medium Docs Contact:
Priority: medium    
Version: RHEL 7.7CC: apevec, ctrautma, ekuris, fiezzi, ihrachys, jishi, jlibosva, ldenny, lhh, majopela, mmichels, ralongi, scohen
Target Milestone: ---Keywords: Triaged, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1811119 Environment:
Last Closed: 2020-03-23 11:41:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1801006, 1811119    
Bug Blocks: 1811117    

Comment 3 ying xu 2020-03-17 02:57:19 UTC
reproduced on version:
# rpm -qa|grep ovn
ovn2.13-2.13.0-1.el8fdp.x86_64
ovn2.13-host-2.13.0-1.el8fdp.x86_64
ovn2.13-central-2.13.0-1.el8fdp.x86_64

verified on version:
# rpm -qa|grep ovn
ovn2.13-host-2.13.0-4.el8fdp.x86_64
ovn2.13-central-2.13.0-4.el8fdp.x86_64
ovn2.13-2.13.0-4.el8fdp.x86_64

old version:
:: [ 22:47:36 ] :: [   PASS   ] :: Command 'ip netns exec vm2 /usr/libexec/platform-python ./broadcastset.py' (Expected 0, got 0)
:: [ 22:47:41 ] :: [  BEGIN   ] :: Running 'tcpdump -r a.pacp -nn -v |grep 42.42.42.254.67.*255.255.255.255.*BOOTP/DHCP.*Reply'
reading from file a.pacp, link-type EN10MB (Ethernet)
:: [ 22:47:41 ] :: [   FAIL   ] :: Command 'tcpdump -r a.pacp -nn -v |grep 42.42.42.254.67.*255.255.255.255.*BOOTP/DHCP.*Reply' (Expected 0, got 1)

latest version:
:: [ 22:43:03 ] :: [   PASS   ] :: Command 'ip netns exec vm2 /usr/libexec/platform-python ./broadcastset.py' (Expected 0, got 0)
:: [ 22:43:08 ] :: [  BEGIN   ] :: Running 'tcpdump -r a.pacp -nn -v |grep 42.42.42.254.67.*255.255.255.255.*BOOTP/DHCP.*Reply'
reading from file a.pacp, link-type EN10MB (Ethernet)
    42.42.42.254.67 > 255.255.255.255.68: BOOTP/DHCP, Reply, length 276, Flags [Broadcast]
:: [ 22:43:08 ] :: [   PASS   ] :: Command 'tcpdump -r a.pacp -nn -v |grep 42.42.42.254.67.*255.255.255.255.*BOOTP/DHCP.*Reply' (Expected 0, got 0)

Comment 5 errata-xmlrpc 2020-03-23 11:41:48 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-2020:0925