Share via


TCP/IPv6 Configurable Registry Settings (Windows CE 5.0)

Send Feedback

The following subkeys apply to TCP/IPv6 only. You can set all other configurable parameters by using the ipv6.exe utility.

Note   The default registry values vary depending on which Catalog items are included in OS design. For more information, see Default Registry Settings.

Per-interface settings are not configurable in the registry, but are configurable by using the ipv6.exe utility. These settings can be persisted in registry by the OS over reboots with the use of -p flag in IPv6. For more information about ipv6.exe, see IPv6.

The following table shows the registry values for the HKEY_LOCAL_MACHINE\Comm\Tcpip6\Parms registry key.

Value : type Description
DefaultCurHopLimit : REG_WORD Default setting is 128. Specifies the current hop limit.
LLMNRPort Default setting is 5353. The port to use for LLMNR queries over TCP and UDP.
LLMNRv6Address : REG_SZ Default setting is FF02:0:0:0:0:0:1:3. The IPv6 address to use for Link-Local Multicast Name Resolution (LLMNR) queries.
TcpTimedWaitDelay : REG_DWORD Default setting is 240. The valid range for this value is 30 to 300 milliseconds. This value determines the length of time that a connection stays in the TIME_WAIT state when being closed. While a connection is in the TIME_WAIT state, the socket pair cannot be re-used.

The following table shows the registry values for the HKEY_LOCAL_MACHINE\Comm\Tcpip6\Parms\Global registry key.

Value : type Description
UseTemporaryAddresses : REG_DWORD Default setting is 1. Specifies whether temporary addresses should be used.

The following table shows the host-specific values for the HKEY_LOCAL_MACHINE\Comm\Tcpip\Hosts\<Host Name> subkey.

Value : type Description
ipaddr6 : REG_BINARY This value stores the IPv6 addresses associated with this host name. The length of this value is 20 bytes per address (16 bytes for address and 4 bytes for Scope ID).

See Also

TCP/IPv6 Registry Settings | DHCPv6 Non-Configurable Registry Settings | DHCPv6 Lite Registry Settings | TCP/IPv4 and v6 Common Registry Settings

Send Feedback on this topic to the authors

Feedback FAQs

© 2006 Microsoft Corporation. All rights reserved.