Bug 58146 - dhcpcd still remove IFF_MULTICAST from interface flags
dhcpcd still remove IFF_MULTICAST from interface flags
Product: Red Hat Linux
Classification: Retired
Component: dhcpcd (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Elliot Lee
Depends On:
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Reported: 2002-01-09 17:23 EST by Tim Wright
Modified: 2008-05-01 11:38 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2002-01-15 18:46:43 EST
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch to client.c to fix interface manipulation. (1.58 KB, patch)
2002-01-15 18:42 EST, Tim Wright
no flags Details | Diff

  None (edit)
Description Tim Wright 2002-01-09 17:23:40 EST
Description of Problem: This is ongoing from bug #55093. I just took the rawhide 
RPM which claims to have fixed bug #55093, and it still fails turning off multicast for 
the interface in question. Looking at the code, this makes sense because at line 
1175, IFF_MULTICAST is added to the interface flags, but almost immediately 
after at line 1206 in the broadcast loop, it's missing again :-(

I'm not sure, but it strikes me that it would be better to use SIOCGIFFLAGS first 
and save such things as the multicast state rather than unconditionally overwriting 
the flags.

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

How Reproducible:

Steps to Reproduce:
1.  Install rawhide dhcpcd
2. Bring up an interface using dhcpcd
3. Notice that multicast is no longer set on the interface

Actual Results:
Interface does not show multicast.

Expected Results:
Interface should show multicast.

Additional Information:
 This worked in Red Hat 7.1. The wierd part is that the 1.3.18pl8 code doesn't 
seem to bother with the IFF_MULTICAST flag at all, yet it doesn't get reset. Is this 
a change in the library/kernel code that's now killing the flag ?
Comment 1 Tim Wright 2002-01-15 18:42:47 EST
Created attachment 42516 [details]
Patch to client.c to fix interface manipulation.
Comment 2 Tim Wright 2002-01-15 18:46:38 EST
Attached patch that fixes the problem with the flags getting reset, at least in
my testing. This patch is against the virgin dhcpcd-1.3.21pl2 code.


Comment 3 Elliot Lee 2002-03-08 11:02:32 EST
applied in my package, will submit upstream as well

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