netdev - Fw: [Bug 196595] New: Regression IGMP sysctl init values if not IP

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Message-ID: <20170805213846.0df6ef45@xeon-e3>
Date:   Sat, 5 Aug 2017 21:38:46 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     netdev@...r.kernel.org
Subject: Fw: [Bug 196595] New: Regression IGMP sysctl init values if not
 IP_MULTICAST



Begin forwarded message:

Date: Sat, 05 Aug 2017 23:57:48 +0000
From: bugzilla-daemon@...zilla.kernel.org
To: stephen@...workplumber.org
Subject: [Bug 196595] New: Regression IGMP sysctl init values if not IP_MULTICAST


https://bugzilla.kernel.org/show_bug.cgi?id=196595

            Bug ID: 196595
           Summary: Regression IGMP sysctl init values if not IP_MULTICAST
           Product: Networking
           Version: 2.5
    Kernel Version: 4.5 - 4.12
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: IPV4
          Assignee: stephen@...workplumber.org
          Reporter: vmlinuz386@...il.com
        Regression: No

I just upgraded from 4.4.x to 4.12.x and detected that igmp related settings
are not set to default values (1, 20, 10):

net.ipv4.igmp_link_local_mcast_reports = 0
net.ipv4.igmp_max_memberships = 0
net.ipv4.igmp_max_msf = 0

This is fixed if I enable IP_MULTICAST. Looks like a regression since some
changes made to "Namespaceify" commit dcd87999d415d39cf2ae510bfed6b8206d778e1c 
and related commits.

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