Hi, I'm currently doing IPv6 conformance testing with FreeBSD-7.1 RELEASE however I've encountered DAD timing issue on Intel Gigabit NICs with em(4) driver. I configure several tweaks on net.inet6.ip6.dad_count such as 2 seconds, 3 seconds and 4 seconds just to get the specific DAD timing on each test item. There are 29 test items for a router category on RFC 4862 (IPv6 Stateless Address Autoconfiguration) and some items passed on 4 seconds, others passed on 1 second (default DAD configuration) while others are not consistent (sometimes passed on 4 seconds and if tested again, it will satisfy on 1 second). With FastE NICs such as Intel 10/100 with fxp(4) driver and Via Rhine 10/100 with vr(4) driver, these cards just works fine using the default net.inet6.ip6.dad_count=1 (1 second) without this DAD timing problem.
So my concern is, why does Intel GigE NICs with em(4) driver behave this way? I have tested 2 Intel GigE NICs with different chipsets, 82541and 82574L and it does the same behavior? Is this a bug or something? Regards, Siquijor _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
