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IPPROTO_IPV6 (Compact 2013)

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3/26/2014

The following table describes IPPROTO_IPV6 socket options. See getsockopt and setsockopt for more information about getting and setting socket options. To enumerate protocols and discover supported properties for each installed protocol, use the WSAEnumProtocols function.

Some socket options require more explanation than these tables can explain; such options contain links to additional pages.

IPPROTO_IPV6

Option

get/set/both

Optval type

Description

IPV6_ADD_MEMBERSHIP

set

struct ipv6_mreq

Join the supplied multicast group on the given interface index

IPV6_DROP_MEMBERSHIP

set

struct ipv6_mreq

Leave the supplied multicast group from the given interface

IPV6_HDRINCL

both

BOOL

Indicates IPv6 header will be supplied on all outgoing data

IPV6_HOPLIMIT

both

BOOL

Indicates that hop (TTL) information should be returned in the WSARecvMsg function

IPV6_JOIN_GROUP

set

struct ipv6_mreq

Same as IPV6_ADD_MEMBERSHIP

IPV6_LEAVE_GROUP

set

struct ipv6_m

Same as IPV6_DROP_MEMBERSHIP

IPV6_MULTICAST_HOPS

both

DWORD

Sets/gets the TTL value associated with IPv6 multicast traffic on the socket

IPV6_MULTICAST_IF

both

DWORD

Sets the outgoing (IPv6) interface for multicast traffic. This is important for multi-homed machines. The input value is the 4-byte interface index of the desired outgoing interface (use GetAdaptersAddresses to obtain index information).

IPV6_MULTICAST_LOOP

both

BOOL

Indicates multicast data sent on socket will be echoed to the sockets receive buffer if it is also joined on the destination multicast group

IPV6_PKTINFO

both

BOOL

Indicates that packet information should be returned in the WSARecvMsg function

IPV6_PROTECTION_LEVEL

both

INT

Enables restriction of a socket to a specified scope, such as addresses that have the same link local or site local prefix. Provides various restriction levels and default settings. See Using IPV6_PROTECTION_LEVEL for more information.

IPV6_UNICAST_HOPS

both

DWORD

Sets/gets the current TTL value associated with IPv6 socket

In This Section

See Also

Reference

Socket Options
getsockopt (Windows Sockets)
setsockopt (Windows Sockets)
WSAEnumProtocols