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< .\" $FreeBSD: head/share/man/man4/gif.4 148419 2005-07-26 18:14:22Z trhodes $
---
> .\" $FreeBSD: head/share/man/man4/gif.4 193664 2009-06-07 23:00:40Z hrs $
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< .Dd April 10, 1999
---
> .Dd June 8, 2009
258a259,287
> .Pp
> On
> .Fx
> 6.1, 6.2, 6.3, 7.0, 7.1, and 7.2
> the
> .Nm
> sends and receives incorrect EtherIP packets with reversed version
> field when
> .Xr if_bridge 4
> is used together. As a workaround on this interoperability issue, the
> following two
> .Xr ifconfig 8
> flags can be used:
> .Bl -tag -width "accept_rev_ethip_ver" -offset indent
> .It accept_rev_ethip_ver
> accepts both correct EtherIP packets and ones with reversed version
> field, if enabled. If disabled, the
> .Nm
> accepts the correct packets only. This flag is enabled by default.
> .It send_rev_ethip_ver
> sends EtherIP packets with reversed version field intentionally, if
> enabled. If disabled, the
> .Nm
> sends the correct packets only. This flag is disabled by default.
> .El
> .Pp
> If interoperability with the older
> .Fx
> machines is needed, both of these two flags must be enabled.