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curl/docs/cmdline-opts/interface.d
Luca Boccassi 32828cc4fb
--interface: add support for Linux VRF
The --interface command (CURLOPT_INTERFACE option) already uses
SO_BINDTODEVICE on Linux, but it tries to parse it as an interface or IP
address first, which fails in case the user passes a VRF.

Try to use the socket option immediately and parse it as a fallback
instead.  Update the documentation to mention this feature, and that it
requires the binary to be ran by root or with CAP_NET_RAW capabilities
for this to work.

Closes #2024
2017-11-09 13:20:11 +01:00

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Makefile

Long: interface
Arg: <name>
Help: Use network INTERFACE (or address)
See-also: dns-interface
---
Perform an operation using a specified interface. You can enter interface
name, IP address or host name. An example could look like:
curl --interface eth0:1 https://www.example.com/
If this option is used several times, the last one will be used.
On Linux it can be used to specify a VRF, but the binary needs to either
have CAP_NET_RAW or to be ran as root. More information about Linux VRF:
https://www.kernel.org/doc/Documentation/networking/vrf.txt