On Sun, 19 Apr 2009, Jon Otterholm wrote:
I have a router running 6.4R that does not forward packets if I disable PROMISC on the interface. Hardware is a Dell PE with two Intel 82541EI chipsets (if_em). I have a number (~100) of vlan-interfaces on em0. Everything works as aexpected if I turn on PROMISC on em0 but forwarding stops if I disable it, I can still communicate with the router directly on the same logical network (for example pinging interface adress on a vlan_if from a client on that vlan) but all forwarding stops.
Try disabling hardware VLAN taggging/processing? I believe you should be able to do this with "ifconfig em0 -vlanhwtag" (substituting appropriate interface names). It could be there's a bug in how hardware-optimized tag handling is being managed, as when promiscuous mode is used we re-insert vlan headers in software for the benefits of BPF.
Robert N M Watson Computer Laboratory University of Cambridge
Some info: net.inet.ip.forwarding: 1 net.inet.ip.fastforwarding: 0 (enableing this does not help) net.inet.tcp.recvspace=1048576 net.inet.tcp.sendspace=1048576 kern.ipc.maxsockbuf=16777216 I use PF for filtering and disableing this does not help either. Anyone with a clue? //JO _______________________________________________ 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"
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