kernel-patch/kernel-4.9.0-eoip-buildconf.patch

--- linux-3.15/net/ipv4/Makefile.orig	2014-06-14 00:22:46.749706936 +0300
+++ linux-3.15/net/ipv4/Makefile	2014-06-14 00:23:53.257704010 +0300
@@ -23,6 +23,7 @@ gre-y := gre_demux.o
 obj-$(CONFIG_NET_IPGRE_DEMUX) += gre.o
 obj-$(CONFIG_NET_IPGRE) += ip_gre.o
 obj-$(CONFIG_NET_IPVTI) += ip_vti.o
+obj-$(CONFIG_NET_EOIP) += eoip.o
 obj-$(CONFIG_SYN_COOKIES) += syncookies.o
 obj-$(CONFIG_INET_AH) += ah4.o
 obj-$(CONFIG_INET_ESP) += esp4.o
--- linux-3.15/net/ipv4/Kconfig.orig	2014-06-14 00:18:28.437718301 +0300
+++ linux-3.15/net/ipv4/Kconfig	2014-06-14 00:22:32.273707573 +0300
@@ -182,7 +182,7 @@ config NET_IPGRE_DEMUX
 	tristate "IP: GRE demultiplexer"
 	help
 	 This is helper module to demultiplex GRE packets on GRE version field criteria.
-	 Required by ip_gre and pptp modules.
+	 Required by ip_gre, pptp and eoip modules.
 
 config NET_IP_TUNNEL
 	tristate
@@ -212,6 +212,17 @@ config NET_IPGRE_BROADCAST
 	  Network), but can be distributed all over the Internet. If you want
 	  to do that, say Y here and to "IP multicast routing" below.
 
+config NET_EOIP
+	tristate "IP: EOIP ethernet tunnels over IP"
+	depends on (IPV6 || IPV6=n) && NET_IPGRE_DEMUX
+	help
+	  Tunneling means encapsulating data of one protocol type within
+	  another protocol and sending it over a channel that understands the
+	  encapsulating protocol. This particular tunneling driver implements
+	  MikroTik RouterOS compatible encapsulation of ethernet frames over
+	  existing IPv4 infrastructure. It is useful if the other endpoint
+	  is a MikroTik router.
+
 config IP_MROUTE
 	bool "IP: multicast routing"
 	depends on IP_MULTICAST