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Description of problem:
We are using ttcp as a multicast listener.  When we use ttcp -rup 5005 224.0.0.5 it does run, but doesn't work.

We ran it with strace to see what was happening and noticed the following:-

socket(PF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
write(2, "ttcp-r: socket\n", 15ttcp-r: socket
)        = 15
setsockopt(3, SOL_IP, IP_ADD_MEMBERSHIP, "\340\0\0\5\0\0\0\0", 8) = -1 ENODEV (No such device)
bind(3, {sa_family=AF_UNSPEC, sa_data="\23\215\0\0\0\0\0\0\0\0\0\0\0\0"}, 16) = 0
gettimeofday({1130997377, 483238}, NULL) = 0
getrusage(RUSAGE_SELF, {ru_utime={0, 0}, ru_stime={0, 0}, ...}) = 0


I used lshw to pickup the network card information

           *-network
                description: Ethernet interface
                product: NetXtreme BCM5782 Gigabit Ethernet
                vendor: Broadcom Corporation
                physical id: 2
                bus info: pci@05:02.0
                logical name: eth0
                version: 03
                serial: 00:0f:20:39:82:e7
                size: 100MB/s
                capacity: 1GB/s
                width: 64 bits
                clock: 66MHz
                capabilities: bus_master cap_list ethernet physical mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegociation
                configuration: autonegociation=on broadcast=yes driver=tg3 driverversion=3.22RH duplex=full ip=10.1.30.60 link=yes multicast=yes port=twisted pair speed=100MB/s
                resources: iomemory:fc500000-fc50ffff irq:5

We are using two other RHEL3 boxes as well in the environment all running the same updates.  One is set to transmit multicast traffic using the same ttcp binary.  The other listens using the same command as above and it sees the traffic.

The only difference that I can see is the network card and therefore the driver used is differnet per unit.

I have seen the other bug report with multicast and ENODEV, but we do not remove the module and re-insert it.  Plus it seems specific to a prticular module.

Version-Release number of selected component (if applicable):
use ttcp to listen on multicast address

How reproducible:
Always

Steps to Reproduce:
1.Setup a box to send multicast traffic, i.e. ttcp -tup 5005 224.0.0.5
2.Setup a box that uses a network card that uses the tg3 driver to listen, ttcp -rup 5005 224.0.0.5
3.Setup a nother box to listen for multicast traffic ttcp -rup 5005 224.0.0.5
4. Send traffic via first box, see whether traffic is received ont he listeners
  

Actual Results:  ttcp listner on the tg3 network card receives no traffic as it doesn't listen, see strace output above

Expected Results:  We should have seen the test traffic

Additional info: