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Bug 1561339

Summary: No Broadcast address shown inside the containers
Product: Red Hat Enterprise Linux 8 Reporter: Suhaas Bhat <subhat>
Component: podmanAssignee: Matthew Heon <mheon>
Status: CLOSED CURRENTRELEASE QA Contact: atomic-bugs <atomic-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.3CC: amurdaca, bbaude, dornelas, dwalsh, jhunsaker, jligon, jnovy, lsm5, mcambria, mheon, pasik, umohnani, ypu
Target Milestone: rcKeywords: Extras
Target Release: 8.0Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-06-03 20:32:39 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:
Bug Depends On:    
Bug Blocks: 1186913    

Description Suhaas Bhat 2018-03-28 07:08:45 UTC
Description of problem:
There is no broadcast address shown for interfaces inside the containers

Version-Release number of selected component (if applicable):
RHEL 7.4
docker-1.13.1-53.git774336d.el7.x86_64

How reproducible:
Fully reproducible

With docker-ce package, broadcast is set even with the default network

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.xx.xx.x  netmask 255.255.255.0  broadcast 172.xx.xx.255
        ether 02:42:ac:1c:3c:02  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0



with docker-1.13.1

eth0      Link encap:Ethernet  HWaddr 02:42:AC:11:00:03  
          inet addr:172.xx.x.x  Bcast:0.0.0.0  Mask:255.255.0.0
          inet6 addr: fe80::42:acff:fe11:3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:90 (90.0 B)  TX bytes:90 (90.0 B)

Actual results: Shows no broadcast address


Expected results: Should show as per the docker-ce package

Comment 4 Daniel Walsh 2019-08-13 19:10:47 UTC
Is this caused by us or cni?

Comment 5 Daniel Walsh 2020-06-03 14:23:33 UTC
Matt and

Comment 6 Matthew Heon 2020-06-03 14:30:25 UTC
@Dan What were you trying to say? Looks like it was cut off.

Comment 8 Daniel Walsh 2020-06-03 20:31:40 UTC
I read this as they wanted the information in podman inspect.

Comment 9 Matthew Heon 2020-06-03 20:56:43 UTC
I don't read it that way? I don't see any mention of inspect in the BZ. This looks like the broadcast not being set in interfaces made by CNI, but this very much looks fixed.

Comment 10 mcambria@redhat.com 2020-06-03 22:44:20 UTC
Agreed.  CNI also doesn't do anything but tell kernel to e.g. "ip addr add 10.89.0.2/16 dev eth0" inside the container.  If that had a problem it wouldn't have slipped under the radar.

I don't know what the real issue was.