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kern/37959: re(4) vs. hw vlan tagging

>Number:         37959
>Category:       kern
>Synopsis:       re(4) has troubles with hw vlan tagging
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 05 06:55:00 +0000 2008
>Originator:     Quentin Garnier
>Release:        NetBSD 4.0_STABLE
re0 at pci0 dev 11 function 0: RealTek 8169/8110 Gigabit Ethernet (rev. 0x10)
re0: interrupting at ioapic0 pin 19 (irq 11)
re0: Ethernet address 00:0f:b5:42:7b:fa
re0: using 256 tx descriptors
rgephy0 at re0 phy 7: RTL8169S/8110S 1000BASE-T media interface, rev. 0
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 
1000baseT-FDX, auto
        When setting up vlan interfaces on that re device with
        4.0_STABLE, things go seriously bad.

        I haven't had enough time to precisely look at what happens, but
        I know at least that "large" packets never reach their
        Configure a vlan, generate traffic over it.
        No fix, just a workaround, disabling hw vlan tagging in the

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