From: Rob L. <ro...@la...> - 2005-11-09 01:13:28
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So I'm trying to play with ifenslave under UML, and my naieve attempt to go ./linux LD_ASSUME_KERNEL=2.4.1 eth0=daemon,11:11:11:11:11:11 \ eth1=daemon,22:22:22:22:22:22 rootfstype=hostfs rw init=/bin/sh Led to unexpected results that eth0 had a mac addr of 00:00:00:00:00:00. Eventually, I tracked it down to this test in arch/um/drivers/net_kern.c: if(addr[0] & 1){ printk(KERN_ERR "Attempt to assign a broadcast ethernet address to a " "device disallowed\n"); return(0); } My question is: where's the spec for what is and isn't a broadcast address? RFC 894 says that "the" ethernet broadcast address is (only) FF:FF:FF:FF:FF:FF http://www.freesoft.org/CIE/RFC/894/ So does Ethereal's wiki: http://wiki.ethereal.com/Ethernet Confused? Rob |