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26 lines
937 B
26 lines
937 B
.\" |
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.\" Copyright 2010 by Ben Greear <greearb@candelatech.com> |
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.\" SPDX-License-Identifier: MIT |
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.\" |
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.TH ARES_SET_LOCAL_DEV 3 "30 June 2010" |
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.SH NAME |
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ares_set_local_dev \- Bind to a specific network device when creating sockets. |
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.SH SYNOPSIS |
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.nf |
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#include <ares.h> |
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void ares_set_local_dev(ares_channel_t *\fIchannel\fP, const char* \fIlocal_dev_name\fP) |
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.fi |
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.SH DESCRIPTION |
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The \fBares_set_local_dev\fP function causes all future sockets |
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to be bound to this device with SO_BINDTODEVICE. This forces communications |
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to go over a certain interface, which can be useful on multi-homed machines. |
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This option is only supported on Linux, and root privileges are required |
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for the option to work. If SO_BINDTODEVICE is not supported or the |
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setsocktop call fails (probably because of permissions), the error is |
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silently ignored. |
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.SH SEE ALSO |
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.BR ares_set_local_ip4 (3) |
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.BR ares_set_local_ip6 (3) |
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.SH NOTES |
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This function was added in c-ares 1.7.4
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