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// +build aix freebsd openbsd netbsd
package interfaces
import (
"net"
"golang.org/x/sys/unix"
)
// BindToInterface emulates linux's SO_BINDTODEVICE option for a socket by using
// IP_RECVIF.
func BindToInterface(fd int, ifname string) error {
iface, err := net.InterfaceByName(ifname)
if err != nil {
return err
}
return unix.SetsockoptInt(fd, unix.IPPROTO_IP, unix.IP_RECVIF, iface.Index)
}
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