Bug 1758585

Summary: Bogus JSON object reported with ip -j -4 addr show <iface>
Product: Red Hat Enterprise Linux 8 Reporter: Andrea Claudi <aclaudi>
Component: iprouteAssignee: Andrea Claudi <aclaudi>
Status: CLOSED ERRATA QA Contact: Jaroslav Aster <jaster>
Severity: medium Docs Contact:
Priority: medium    
Version: 8.1CC: atragler, jaster
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: 8.2   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: iproute-5.3.0-1.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-04-28 16:44:02 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: 1752857    
Bug Blocks:    

Description Andrea Claudi 2019-10-04 14:30:58 UTC
Description of problem:
A number of void JSON object are printed when trying to use ip -j -{0,4,6} addr show <iface>

How reproducible:
Always, using ip -j -4 addr show <iface>

Actual results:
$ ip -j -4 addr show ens1u1 | jq
[
  {},
  {},
  {
    "ifindex": 20,
    "ifname": "ens1u1",
    "flags": [
      "BROADCAST",
      "MULTICAST",
      "UP",
      "LOWER_UP"
    ],
    "mtu": 1500,
    "qdisc": "fq_codel",
    "operstate": "UP",
    "group": "default",
    "txqlen": 1000,
    "addr_info": [
      {
        "family": "inet",
        "local": "10.32.181.34",
        "prefixlen": 24,
        "broadcast": "10.32.181.255",
        "scope": "global",
        "dynamic": true,
        "noprefixroute": true,
        "label": "ens1u1",
        "valid_life_time": 37837,
        "preferred_life_time": 37837
      }
    ]
  }
]

Expected results:
$ ./ip/ip -j -4 addr show ens1u1 | jq
[
  {
    "ifindex": 20,
    "ifname": "ens1u1",
    "flags": [
      "BROADCAST",
      "MULTICAST",
      "UP",
      "LOWER_UP"
    ],
    "mtu": 1500,
    "qdisc": "fq_codel",
    "operstate": "UP",
    "group": "default",
    "txqlen": 1000,
    "addr_info": [
      {
        "family": "inet",
        "local": "10.32.181.34",
        "prefixlen": 24,
        "broadcast": "10.32.181.255",
        "scope": "global",
        "dynamic": true,
        "noprefixroute": true,
        "label": "ens1u1",
        "valid_life_time": 37837,
        "preferred_life_time": 37837
      }
    ]
  }
]

Additional info:
Issue is fixed upstream with commit 8847097850571 ("ip address: Set device index in dump request")

Comment 4 errata-xmlrpc 2020-04-28 16:44:02 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-2020:1785