Update dependencies

vendor/github.com/insomniacslk/dhcp/interfaces/bindtodevice_bsd.go

@@ -0,0 +1,19 @@
+// +build aix freebsd openbsd netbsd dragonfly
+
+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)
+}