Question: Multicast and promisc issues 

Forum: PCMCIA Network Adapter Issues
Date: 2000, Apr 27
From: David Shaw <dshaw@akamai.com>

I'm using a Xircom PCMCIA ethernet card (xirc2ps_cs) on a Dell Latitude CPx. MULTICAST is enabled (so says ifconfig). However, I can't receive multicast packets unless the interface is switched to PROMISC or ALLMULTI. I do see that the multicast group was joined (via/proc/net/igmp), but no packets arrive. I've tried different ethernet cards with different drivers (the wavelan for example) and it has the same behavior. I can duplicate the problem on both 3.1.10 and 3.1.14 using kernel 2.2.14. Since this doesn't happen using a non-PCMCIA ethernet card, it seems like there is a bug somewhere (either in my configuration or in pcmcia-cs)

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1. I'm afraid it probably isn't tested much by David Hinds, 2000, Apr 27

(_ Re: I'm afraid it probably isn't tested much by David Shaw, 2000, Apr 27

(_ I don't think I can explain that by David Hinds, 2000, Apr 27

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