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ARES_SET_LOCAL_DEV
Section: C Library Functions (3) Updated: 23 September 2024 Index
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NAME
ares_set_local_dev - Bind to a specific network device when creating sockets.
SYNOPSIS
#include <ares.h>
void ares_set_local_dev(ares_channel_t *channel, const char* local_dev_name)
DESCRIPTION
The ares_set_local_dev function causes all future sockets
to be bound to this device with SO_BINDTODEVICE. This forces communications
to go over a certain interface, which can be useful on mult-homed machines.
This option is only supported on Linux, the interface must not be already bound to the
socket or the current effective user must have CAP_NET_RAW capability in the current
network namespace for the option to work. If SO_BINDTODEVICE is not supported or the
setsockopt call fails (probably because of permissions), the error is
silently ignored.
SEE ALSO
ares_set_local_ip4(3)
ares_set_local_ip6(3)
network_namespaces(7)
NOTES
This function was added in -ares 1.7.4
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
- NOTES
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