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