#6211 BLOC Future : patch for support of per packet mesh ttl

Zarro Boogs per Child bugtracker at laptop.org
Fri Feb 15 15:36:34 EST 2008


#6211: patch for support of per packet mesh ttl
--------------------------+-------------------------------------------------
  Reporter:  mbletsas     |       Owner:  dwmw2                         
      Type:  enhancement  |      Status:  new                           
  Priority:  blocker      |   Milestone:  Future Release                
 Component:  wireless     |     Version:                                
Resolution:               |    Keywords:  libertas, ttl, mesh, Update.1?
  Verified:  0            |    Blocking:                                
 Blockedby:               |  
--------------------------+-------------------------------------------------

Comment(by cscott):

 Replying to [comment:8 jg]:
 > Replying to [comment:6 cscott]:
 > > When we get this patch cleaned up I'd recommend setting the default
 multicast ttl to 1, and requiring the setsockopt call only for those users
 who want it higher (which should be, practically speaking, almost no one).
 This requires us to distinguish between multicast and unicast packets when
 setting the default ttl (which I believe is already being done).
 >
 > I think this likely breaks nearly anything doing multicast/broadcast,
 and would therefore require modifying all applications rather than just
 the ones that need to be aware of mesh.

 Those applications doing multicast/broadcast will break our mesh, so need
 to be modified anyway.

 Let's be safe by default, and give specific applications permission to do
 crazy things.  Otherwise we'll be in the situation we're in now: with an
 unusable mesh.

-- 
Ticket URL: <http://dev.laptop.org/ticket/6211#comment:18>
One Laptop Per Child <http://dev.laptop.org>
OLPC bug tracking system



More information about the Bugs mailing list