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| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version

## *ipv6*

This variable controls the default behavior of lookup-hostname and make-socket.

The valid values are:

- `nil`: Use IPv4 addressing only (unless an IPv6 address is specified for local-host or remote-host in a call to make-socket).
- `:ipv6`: Use IPv6 addressing only.
- `t`: Prefer IPv6 over IPv4 for hostname lookups. Create sockets using IPv6.

See socket.htm for general information on sockets in Allegro CL.

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

|  | ToC | DocOverview | CGDoc | RelNotes | FAQ | Index | PermutedIndex
| Allegro CL version 10.1 Unrevised from 10.0 to 10.1. 10.0 version