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> .\" $FreeBSD: head/share/man/man4/ip6.4 176470 2008-02-22 21:02:36Z bms $
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> .Dd February 21, 2008
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< A value of \-1 resets to the default value.
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> .It Dv IPV6_TCLASS Fa "int *"
> Get or set the value of the traffic class field used for outgoing datagrams
> on this socket.
> The value must be between \-1 and 255.
> A value of \-1 resets to the default value.
> .It Dv IPV6_RECVTCLASS Fa "int *"
> Get or set the status of whether the traffic class header field will be
> provided as ancillary data along with the payload in subsequent
> .Xr recvmsg 2
> calls.
> The header field is stored as a single value of type
> .Vt int .