52 lines
1.3 KiB
Markdown
52 lines
1.3 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Long: interface
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Arg: <name>
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Help: Use network interface
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Category: connection
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Added: 7.3
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Multi: single
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See-also:
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- dns-interface
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Example:
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- --interface eth0 $URL
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- --interface "host!10.0.0.1" $URL
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- --interface "if!enp3s0" $URL
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---
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# `--interface`
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Perform the operation using a specified interface. You can enter interface
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name, IP address or hostname. If you prefer to be specific, you can use the
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following special syntax:
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## if!<name>
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Interface name. If the provided name does not match an existing interface,
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curl returns with error 45.
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## host!<name>
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IP address or hostname.
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## ifhost!<interface>!<host>
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Interface name and IP address or hostname. This syntax requires libcurl 8.9.0
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or later.
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If the provided name does not match an existing interface, curl returns with
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error 45.
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##
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curl does not support using network interface names for this option on
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Windows.
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That name resolve operation if a hostname is provided does **not** use
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DNS-over-HTTPS even if --doh-url is set.
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On Linux this option can be used to specify a **VRF** (Virtual Routing and
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Forwarding) device, but the binary then needs to either have the
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**CAP_NET_RAW** capability set or to be run as root.
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