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 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  multi-homed  machines.   This  option  is  only  supported  on Linux, and root
       privileges are required for the option to work.  If SO_BINDTODEVICE is  not  supported  or
       the  setsocktop  call  fails  (probably  because  of  permissions),  the error is silently
       ignored.

SEE ALSO

       ares_set_local_ip4(3) ares_set_local_ip6(3)

NOTES

       This function was added in c-ares 1.7.4

AUTHOR

       Ben Greear

                                           30 June 2010                     ARES_SET_LOCAL_DEV(3)