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Bug 1042802 - backport: ip -d monitor link is not as verbose as ip -d link
Summary: backport: ip -d monitor link is not as verbose as ip -d link
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: iproute
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Pavel Šimerda (pavlix)
QA Contact: Jaroslav Aster
URL:
Whiteboard:
Depends On: 1042804
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-12-13 12:22 UTC by Antoni Segura Puimedon
Modified: 2015-11-19 14:40 UTC (History)
5 users (show)

Fixed In Version: iproute-3.10.0-40.el7
Doc Type: Enhancement
Doc Text:
Clone Of: 1042799
Environment:
Last Closed: 2015-11-19 14:40:57 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1042799 0 medium CLOSED Inconsistent detailed link information between "ip link" and "ip monitor link" 2021-02-22 00:41:40 UTC
Red Hat Bugzilla 1155116 0 unspecified CLOSED iproute2: implement "-d" option for "ip mon" 2021-02-22 00:41:40 UTC
Red Hat Product Errata RHBA-2015:2117 0 normal SHIPPED_LIVE iproute bug fix and enhancement update 2015-11-19 11:35:06 UTC

Internal Links: 1042799 1155116

Description Antoni Segura Puimedon 2013-12-13 12:22:06 UTC 
+++ This bug was initially created as a clone of Bug #1042799 +++

Description of problem:
In the output of "ip -d -o link show" and "ip -d -o monitor link" vlan and
macvlan devices are reported with the following form:
"device name" + "@" + "device name of the underlying device".

Since it is perfectly legal for another device to include symbols in their
names, e.g., "@", it is perfectly possible to have a dummy device called:
p1p3.13@p1p3

and a vlan device called p1p3.13 that is being reported as
p1p3.13@p1p3

In the output of "ip -d -o link show" this is disambiguable thanks to the fact
that dummies, vlans and macvlans have their type shown in the final segment:

    21: p1p3.13@p1p3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state LOWERLAYERDOWN \    link/ether 00:10:18:e1:6c:f4 brd ff:ff:ff:ff:ff:ff\    vlan id 13 <REORDER_HDR>
    23: p1p3.13@p1p3: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN \    link/ether 82:17:ed:f9:e8:f3 brd ff:ff:ff:ff:ff:ff\    dummy 

However, the output of "ip -d -o monitor link" doesn't include the type
information for any device (not even for just vlanned and dummy types like
"ip -d -o link show" does). E.g.:
    23: p1p3.13@p1p3: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN \    link/ether c2:01:5c:db:bd:39 brd ff:ff:ff:ff:ff:ff
    21: p1p3.13@p1p3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state LOWERLAYERDOWN \    link/ether 00:10:18:e1:6c:f4 brd ff:ff:ff:ff:ff:ff

Without a priori knowledge (having executed before a detailed link show and
keeping a database by interface index) there is no way to tell that the former
is a dummy and the latter is the vlan.

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


How reproducible: 100%


Steps to Reproduce:
1. start the monitor "ip -d -o monitor link"
2. Create vlan 13 over a nic (for example named p1p3)
3. Create a dummy called "p1p3.13@p1p3"
4. Check the detailed link monitor output

Actual results:
    23: p1p3.13@p1p3: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN \    link/ether c2:01:5c:db:bd:39 brd ff:ff:ff:ff:ff:ff
    21: p1p3.13@p1p3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state LOWERLAYERDOWN \    link/ether 00:10:18:e1:6c:f4 brd ff:ff:ff:ff:ff:ff


Expected results:
    23: p1p3.13@p1p3: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN \    link/ether c2:01:5c:db:bd:39 brd ff:ff:ff:ff:ff:ff\    dummy 
    21: p1p3.13@p1p3: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state LOWERLAYERDOWN \    link/ether 00:10:18:e1:6c:f4 brd ff:ff:ff:ff:ff:ff\    vlan id 13 <REORDER_HDR>
Comment 3 Pavel Šimerda (pavlix) 2014-10-10 19:56:34 UTC 
Reproduced it with upstream git:

Terminal #1:

# ip monitor

Terminal #2:

# ip link add d1 type dummy
# ip link add link d1 v1 type vlan id 13

Output (terminal #1):

13: d1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default 
    link/ether 9a:ca:f9:40:76:13 brd ff:ff:ff:ff:ff:ff
13: d1: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default 
    link/ether 9a:ca:f9:40:76:13 brd ff:ff:ff:ff:ff:ff
14: v1@d1: <BROADCAST,NOARP,M-DOWN> mtu 1500 qdisc noop state DOWN group default 
    link/ether 9a:ca:f9:40:76:13 brd ff:ff:ff:ff:ff:ff

Additional info:

Neither "-d" nor "-o" seem to be documented in the manual pages.
Comment 5 Pavel Šimerda (pavlix) 2015-06-04 12:04:53 UTC 
Upstream works for me.
Comment 11 errata-xmlrpc 2015-11-19 14:40:57 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://rhn.redhat.com/errata/RHBA-2015-2117.html
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