(usagi-users 01025) Multicast bind problem...

[Parijat Mishra <parijat@xxxxxxxxxxxxxx>]

Hello all,

I had posted this question to the list a few days ago.  The thread seems to 
have petered out.  So I will raise this question again.

An application that I want to run wants to set up a 'multicast bus'.  The 
idea is that the application spawns many processes, wach of which listen()s 
on (and sends to) a common multicast address/port combination.  The problem I 
am facing is that the second and subsequent processes' bind() fails with 
"address already in use" error.  Each process sets the SO_REUSEADDR option 
before bind().  BTW, is SO_REUSEPORT available on Linux?

From what I read, setting SO_REUSEADDR for a multicast socket should allow 
many processes to bind to the same address/port combo.  This  works on the 
standard kernels.  But not on USAGI.

SO is there something wrong with bind() on USAGI? Any hints?

I am using the latest codes checkout from CVS.

-- 
Sincerely,
Parijat Mishra
R & D Engineer,
Centre for Wireless Communications, NUS
Tel: (65)8709353