diff --git a/build.sh b/build.sh
index 3565b821..7ccf3bdb 100755
--- a/build.sh
+++ b/build.sh
@@ -68,6 +68,7 @@ ports=(
 	"lsb_vsx"
 	"heatshrink"
 	"smolrtsp"
+	"ethtool"
 )
 
 
diff --git a/ethtool/build.sh b/ethtool/build.sh
new file mode 100755
index 00000000..b2e1ec49
--- /dev/null
+++ b/ethtool/build.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+
+set -e
+
+version="${PORTS_ETHTOOL_VERSION:-6.14}"
+archive_filename="ethtool-${version}.tar.gz"
+
+PREFIX_PORT_SRC="${PREFIX_PORT_BUILD}/${version}"
+b_port_download "https://git.kernel.org/pub/scm/network/ethtool/ethtool.git/snapshot/" "${archive_filename}"
+
+if [ ! -d "${PREFIX_PORT_SRC}" ]; then
+	echo "Extracting sources from ${archive_filename}"
+	mkdir -p "${PREFIX_PORT_SRC}"
+	tar -axf "${PREFIX_PORT}/${archive_filename}" --strip-components 1 -C "${PREFIX_PORT_SRC}"
+fi
+
+b_port_apply_patches "${PREFIX_PORT_SRC}" "${version}"
+
+#
+# Autogen
+#
+if [ ! -f "${PREFIX_PORT_SRC}/configure" ]; then
+	( cd "${PREFIX_PORT_SRC}" && "${PREFIX_PORT_SRC}/autogen.sh" )
+fi
+
+#
+# Configure
+#
+if [ ! -f "${PREFIX_PORT_SRC}/Makefile" ]; then
+	( cd "${PREFIX_PORT_SRC}" && "${PREFIX_PORT_SRC}/configure" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS" \
+		--host="${HOST}" --prefix="${PREFIX_PORTS_INSTALL}" --disable-netlink )
+fi
+
+#
+# Make
+#
+make -C "$PREFIX_PORT_SRC"
+make -C "$PREFIX_PORT_SRC" install
+
+cp -a "$PREFIX_PORT_SRC/ethtool"  "$PREFIX_PROG/ethtool"
+$STRIP -o "$PREFIX_PROG_STRIPPED/ethtool" "$PREFIX_PROG/ethtool"
+b_install "$PREFIX_PORTS_INSTALL/ethtool" /usr/bin/
diff --git a/ethtool/patches/6.14/01-replace-symbols.patch b/ethtool/patches/6.14/01-replace-symbols.patch
new file mode 100644
index 00000000..4c9fc08c
--- /dev/null
+++ b/ethtool/patches/6.14/01-replace-symbols.patch
@@ -0,0 +1,132 @@
+diff --git a/ethtool.c b/ethtool.c
+index 327a2da..f7639d4 100644
+--- a/ethtool.c
++++ b/ethtool.c
+@@ -47,9 +47,17 @@
+ #include <netinet/in.h>
+ #include <arpa/inet.h>
+ 
++#ifdef __phoenix__
++#include <sys/ioctl.h>
++#include <sys/socket.h>
++#include <sys/sockios.h>
++#include "uapi/linux/netlink.h"
++#define AF_NETLINK 16
++#else
+ #include <linux/ioctl.h>
+ #include <linux/sockios.h>
+ #include <linux/netlink.h>
++#endif
+ 
+ #include "common.h"
+ #include "netlink/extapi.h"
+diff --git a/internal.h b/internal.h
+index 6947ec1..f10c426 100644
+--- a/internal.h
++++ b/internal.h
+@@ -24,7 +24,6 @@
+ #define __UAPI_DEF_IF_IFNAMSIZ	1
+ #define __UAPI_DEF_IF_IFMAP	1
+ #define __UAPI_DEF_IF_IFREQ	1
+-#include <linux/if.h>
+ 
+ #include "json_writer.h"
+ #include "json_print.h"
+@@ -42,8 +41,17 @@ typedef uint16_t u16;
+ typedef uint8_t u8;
+ typedef int32_t s32;
+ 
++#ifdef __phoenix__
++#include <phoenix/ethtool.h>
++#include "uapi/linux/net_tstamp.h"
++#include <sys/socket.h>
++#include <limits.h>
++#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
++#else
+ #include <linux/ethtool.h>
+ #include <linux/net_tstamp.h>
++#include <linux/if.h>
++#endif
+ 
+ #if __BYTE_ORDER == __BIG_ENDIAN
+ static inline u16 cpu_to_be16(u16 value)
+diff --git a/rxclass.c b/rxclass.c
+index 1e202cc..c1d1581 100644
+--- a/rxclass.c
++++ b/rxclass.c
+@@ -8,7 +8,13 @@
+ #include <string.h>
+ #include <errno.h>
+ 
++#ifdef __phoenix__
++#include <sys/socket.h>
++#include <sys/sockios.h>
++#else
+ #include <linux/sockios.h>
++#endif
++
+ #include <arpa/inet.h>
+ #include "internal.h"
+ 
+diff --git a/uapi/linux/net_tstamp.h b/uapi/linux/net_tstamp.h
+index 383213d..5dbbf0f 100644
+--- a/uapi/linux/net_tstamp.h
++++ b/uapi/linux/net_tstamp.h
+@@ -10,8 +10,15 @@
+ #ifndef _NET_TIMESTAMPING_H
+ #define _NET_TIMESTAMPING_H
+ 
++#ifdef __phoenix__
++#include "types.h"
++#include "socket.h" /* for SO_TIMESTAMPING */
++
++typedef int __kernel_clockid_t;
++#else
+ #include <linux/types.h>
+ #include <linux/socket.h>   /* for SO_TIMESTAMPING */
++#endif
+ 
+ /*
+  * Possible type of hwtstamp provider. Mainly "precise" the default one
+diff --git a/uapi/linux/netlink.h b/uapi/linux/netlink.h
+index ff64eb1..aca203c 100644
+--- a/uapi/linux/netlink.h
++++ b/uapi/linux/netlink.h
+@@ -2,9 +2,15 @@
+ #ifndef __LINUX_NETLINK_H
+ #define __LINUX_NETLINK_H
+ 
++#ifdef __phoenix__
++#include "const.h"
++#include "socket.h"
++#include "types.h"
++#else
+ #include <linux/const.h>
+ #include <linux/socket.h> /* for __kernel_sa_family_t */
+ #include <linux/types.h>
++#endif
+ 
+ #define NETLINK_ROUTE		0	/* Routing/device hook				*/
+ #define NETLINK_UNUSED		1	/* Unused number				*/
+diff --git a/uapi/linux/types.h b/uapi/linux/types.h
+index 2518741..7600a6e 100644
+--- a/uapi/linux/types.h
++++ b/uapi/linux/types.h
+@@ -2,11 +2,17 @@
+ #ifndef _LINUX_TYPES_H
+ #define _LINUX_TYPES_H
+ 
++#ifdef __phoenix__
++#include <stdint.h>
++#else
+ #include <asm/types.h>
++#endif
+ 
+ #ifndef __ASSEMBLY__
+ 
++#ifndef __phoenix__
+ #include <linux/posix_types.h>
++#endif
+ 
+ #ifdef __SIZEOF_INT128__
+ typedef __signed__ __int128 __s128 __attribute__((aligned(16)));
diff --git a/ethtool/patches/6.14/02-undef-symbols-from-libphoenix.patch b/ethtool/patches/6.14/02-undef-symbols-from-libphoenix.patch
new file mode 100644
index 00000000..5fb27215
--- /dev/null
+++ b/ethtool/patches/6.14/02-undef-symbols-from-libphoenix.patch
@@ -0,0 +1,231 @@
+diff --git a/internal.h b/internal.h
+index f10c426..0d82412 100644
+--- a/internal.h
++++ b/internal.h
+@@ -43,10 +43,39 @@ typedef int32_t s32;
+ 
+ #ifdef __phoenix__
+ #include <phoenix/ethtool.h>
++#include "uapi/linux/ethtool.h"
+ #include "uapi/linux/net_tstamp.h"
+ #include <sys/socket.h>
+ #include <limits.h>
+ #define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
++
++static __inline__ void ethtool_cmd_speed_set(struct ethtool_cmd *ep, __u32 speed)
++{
++	ep->speed = (__u16)(speed & 0xFFFF);
++	ep->speed_hi = (__u16)(speed >> 16);
++}
++
++static __inline__ __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
++{
++	return (ep->speed_hi << 16) | ep->speed;
++}
++
++static __inline__ int ethtool_validate_speed(__u32 speed)
++{
++	return speed <= INT_MAX || speed == (__u32)SPEED_UNKNOWN;
++}
++
++static __inline__ int ethtool_validate_duplex(__u8 duplex)
++{
++	switch (duplex) {
++	case DUPLEX_HALF:
++	case DUPLEX_FULL:
++	case DUPLEX_UNKNOWN:
++		return 1;
++	}
++
++	return 0;
++}
+ #else
+ #include <linux/ethtool.h>
+ #include <linux/net_tstamp.h>
+diff --git a/uapi/linux/ethtool.h b/uapi/linux/ethtool.h
+index 506e086..de358df 100644
+--- a/uapi/linux/ethtool.h
++++ b/uapi/linux/ethtool.h
+@@ -32,6 +32,7 @@
+  * initializer.
+  */
+ 
++#ifndef __phoenix__
+ /**
+  * struct ethtool_cmd - DEPRECATED, link control and status
+  * This structure is DEPRECATED, please use struct ethtool_link_settings.
+@@ -120,6 +121,7 @@ struct ethtool_cmd {
+ 	__u32	reserved[2];
+ };
+ 
++
+ static __inline__ void ethtool_cmd_speed_set(struct ethtool_cmd *ep,
+ 					 __u32 speed)
+ {
+@@ -131,6 +133,7 @@ static __inline__ __u32 ethtool_cmd_speed(const struct ethtool_cmd *ep)
+ {
+ 	return (ep->speed_hi << 16) | ep->speed;
+ }
++#endif
+ 
+ /* Device supports clause 22 register access to PHY or peripherals
+  * using the interface defined in <linux/mii.h>.  This should not be
+@@ -652,6 +655,7 @@ enum ethtool_link_ext_substate_module {
+ 	ETHTOOL_LINK_EXT_SUBSTATE_MODULE_CMIS_NOT_READY = 1,
+ };
+ 
++#ifndef __phoenix__
+ #define ETH_GSTRING_LEN		32
+ 
+ /**
+@@ -712,6 +716,7 @@ enum ethtool_stringset {
+ 	/* add new constants above here */
+ 	ETH_SS_COUNT
+ };
++#endif
+ 
+ /**
+  * enum ethtool_mac_stats_src - source of ethtool MAC statistics
+@@ -1088,6 +1093,7 @@ enum ethtool_module_fw_flash_status {
+ 	ETHTOOL_MODULE_FW_FLASH_STATUS_ERROR,
+ };
+ 
++#ifndef __phoenix__
+ /**
+  * struct ethtool_gstrings - string set for data tagging
+  * @cmd: Command number = %ETHTOOL_GSTRINGS
+@@ -1171,6 +1177,7 @@ struct ethtool_test {
+ 	__u32	len;
+ 	__u64	data[];
+ };
++#endif
+ 
+ /**
+  * struct ethtool_stats - device-specific statistics
+@@ -1946,6 +1953,7 @@ enum ethtool_fec_config_bits {
+ 
+ /* Link mode bit indices */
+ enum ethtool_link_mode_bit_indices {
++#ifndef __phoenix__
+ 	ETHTOOL_LINK_MODE_10baseT_Half_BIT	= 0,
+ 	ETHTOOL_LINK_MODE_10baseT_Full_BIT	= 1,
+ 	ETHTOOL_LINK_MODE_100baseT_Half_BIT	= 2,
+@@ -1978,7 +1986,7 @@ enum ethtool_link_mode_bit_indices {
+ 	ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT	= 29,
+ 	ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT	= 30,
+ 	ETHTOOL_LINK_MODE_25000baseCR_Full_BIT	= 31,
+-
++#endif
+ 	/* Last allowed bit for __ETHTOOL_LINK_MODE_LEGACY_MASK is bit
+ 	 * 31. Please do NOT define any SUPPORTED_* or ADVERTISED_*
+ 	 * macro for bits > 31. The only way to use indices > 31 is to
+@@ -2080,6 +2088,7 @@ enum ethtool_link_mode_bit_indices {
+ 	__ETHTOOL_LINK_MODE_MASK_NBITS
+ };
+ 
++#ifndef __phoenix__
+ #define __ETHTOOL_LINK_MODE_LEGACY_MASK(base_name)	\
+ 	(1UL << (ETHTOOL_LINK_MODE_ ## base_name ## _BIT))
+ 
+@@ -2191,27 +2200,33 @@ enum ethtool_link_mode_bit_indices {
+ 
+ #define SPEED_UNKNOWN		-1
+ 
+-static __inline__ int ethtool_validate_speed(__u32 speed)
+-{
+-	return speed <= INT_MAX || speed == (__u32)SPEED_UNKNOWN;
+-}
+-
+ /* Duplex, half or full. */
+ #define DUPLEX_HALF		0x00
+ #define DUPLEX_FULL		0x01
+ #define DUPLEX_UNKNOWN		0xff
+ 
+-static __inline__ int ethtool_validate_duplex(__u8 duplex)
+-{
+-	switch (duplex) {
+-	case DUPLEX_HALF:
+-	case DUPLEX_FULL:
+-	case DUPLEX_UNKNOWN:
+-		return 1;
+-	}
+-
+-	return 0;
+-}
++/* Which connector port. */
++#define PORT_TP			0x00
++#define PORT_AUI		0x01
++#define PORT_MII		0x02
++#define PORT_FIBRE		0x03
++#define PORT_BNC		0x04
++#define PORT_DA			0x05
++#define PORT_NONE		0xef
++#define PORT_OTHER		0xff
++
++/* Enable or disable autonegotiation. */
++#define AUTONEG_DISABLE		0x00
++#define AUTONEG_ENABLE		0x01
++
++/* MDI or MDI-X status/control - if MDI/MDI_X/AUTO is set then
++ * the driver is required to renegotiate link
++ */
++#define ETH_TP_MDI_INVALID	0x00 /* status: unknown; control: unsupported */
++#define ETH_TP_MDI		0x01 /* status: MDI;     control: force MDI */
++#define ETH_TP_MDI_X		0x02 /* status: MDI-X;   control: force MDI-X */
++#define ETH_TP_MDI_AUTO		0x03 /*                  control: auto-select */
++#endif
+ 
+ #define MASTER_SLAVE_CFG_UNSUPPORTED		0
+ #define MASTER_SLAVE_CFG_UNKNOWN		1
+@@ -2239,16 +2254,6 @@ static __inline__ int ethtool_validate_duplex(__u8 duplex)
+ /* The MAC is programmed with a sufficiently-large IPG. */
+ #define RATE_MATCH_OPEN_LOOP	3
+ 
+-/* Which connector port. */
+-#define PORT_TP			0x00
+-#define PORT_AUI		0x01
+-#define PORT_MII		0x02
+-#define PORT_FIBRE		0x03
+-#define PORT_BNC		0x04
+-#define PORT_DA			0x05
+-#define PORT_NONE		0xef
+-#define PORT_OTHER		0xff
+-
+ /* Which transceiver to use. */
+ #define XCVR_INTERNAL		0x00 /* PHY and MAC are in the same package */
+ #define XCVR_EXTERNAL		0x01 /* PHY and MAC are in different packages */
+@@ -2256,18 +2261,6 @@ static __inline__ int ethtool_validate_duplex(__u8 duplex)
+ #define XCVR_DUMMY2		0x03
+ #define XCVR_DUMMY3		0x04
+ 
+-/* Enable or disable autonegotiation. */
+-#define AUTONEG_DISABLE		0x00
+-#define AUTONEG_ENABLE		0x01
+-
+-/* MDI or MDI-X status/control - if MDI/MDI_X/AUTO is set then
+- * the driver is required to renegotiate link
+- */
+-#define ETH_TP_MDI_INVALID	0x00 /* status: unknown; control: unsupported */
+-#define ETH_TP_MDI		0x01 /* status: MDI;     control: force MDI */
+-#define ETH_TP_MDI_X		0x02 /* status: MDI-X;   control: force MDI-X */
+-#define ETH_TP_MDI_AUTO		0x03 /*                  control: auto-select */
+-
+ /* Wake-On-Lan options. */
+ #define WAKE_PHY		(1 << 0)
+ #define WAKE_UCAST		(1 << 1)
+@@ -2430,6 +2423,7 @@ enum ethtool_reset_flags {
+ #define ETH_RESET_SHARED_SHIFT	16
+ 
+ 
++#ifndef __phoenix__
+ /**
+  * struct ethtool_link_settings - link control and status
+  *
+@@ -2562,6 +2556,7 @@ struct ethtool_link_settings {
+ 	 * __u32 map_lp_advertising[link_mode_masks_nwords];
+ 	 */
+ };
++#endif
+ 
+ /**
+  * enum phy_upstream - Represents the upstream component a given PHY device
diff --git a/ethtool/patches/6.14/03-add-ifloopback-manipulation.patch b/ethtool/patches/6.14/03-add-ifloopback-manipulation.patch
new file mode 100644
index 00000000..17988cf1
--- /dev/null
+++ b/ethtool/patches/6.14/03-add-ifloopback-manipulation.patch
@@ -0,0 +1,142 @@
+diff --git a/ethtool.8.in b/ethtool.8.in
+index 7e164a6..584b157 100644
+--- a/ethtool.8.in
++++ b/ethtool.8.in
+@@ -247,6 +247,11 @@ ethtool \- query or control network driver and hardware settings
+ .A1 on off
+ .RB ...
+ .HP
++.B ethtool \-b|\-\-show\-loopback
++.I ethX
++.B ethtool \-B|\-\-config\-loopback
++.I ethX
++.B1 on off
+ .B ethtool \-p|\-\-identify
+ .I devname
+ .RI [ N ]
+@@ -794,6 +799,20 @@ Specifies whether Rx ntuple filters and actions should be enabled
+ Specifies whether receive hashing offload should be enabled
+ .RE
+ .TP
++.B \-b \-\-show\-loopback
++Queries the specified ethernet device for loopback mode settings.
++.TP
++.B \-B \-\-config\-loopback
++Configures loopback mode on the specified ethernet device. Possible values
++are:
++.TP
++.A1 on off
++Switches loopback mode
++.B on
++or
++.B off
++for the specified ethernet device.
++.TP
+ .B \-p \-\-identify
+ Initiates adapter-specific action intended to enable an operator to
+ easily identify the adapter by sight.  Typically this involves
+diff --git a/ethtool.c b/ethtool.c
+index f7639d4..c9d8ee2 100644
+--- a/ethtool.c
++++ b/ethtool.c
+@@ -29,6 +29,7 @@
+  *   * show settings for all devices
+  */
+ 
++#include "phoenix/ethtool.h"
+ #include "internal.h"
+ #include <string.h>
+ #include <strings.h>
+@@ -5754,6 +5755,56 @@ static int do_sfec(struct cmd_context *ctx)
+ 
+ static int do_perqueue(struct cmd_context *ctx);
+ 
++static int do_gloopback(struct cmd_context *ctx)
++{
++	int err;
++	struct ethtool_value edata = {
++		.cmd = ETHTOOL_GLOOPBACK,
++		.data = 0,
++	};
++
++	err = send_ioctl(ctx, &edata);
++	if (err < 0) {
++		perror("Cannot get loopback status");
++		return err;
++	}
++	printf("%.*s: Loopback is %s\n", IFNAMSIZ, ctx->ifr.ifr_name, edata.data ? "on" : "off");
++
++	return err;
++}
++
++static int do_sloopback(struct cmd_context *ctx)
++{
++	int err;
++	struct ethtool_value edata;
++
++	edata.cmd = ETHTOOL_SLOOPBACK;
++
++	if (ctx->argc != 1) {
++		exit_bad_args_info("{ on|off } should be provided");
++	}
++
++	if (strcmp(ctx->argp[0], "on") == 0) {
++		edata.data = 1;
++	} else if (strcmp(ctx->argp[0], "off") == 0) {
++		edata.data = 0;
++	} else {
++		exit_bad_args_info("{ on|off } are the only supported options");
++	}
++
++	err = send_ioctl(ctx, &edata);
++	if (err < 0) {
++		perror("Cannot set loopback");
++		return err;
++	}
++	if (edata.data == ETH_PHY_LOOPBACK_SET_FAILED) {
++		fprintf(stderr, "Cannot set loopback: driver failed to set loopback");
++		return 1;
++	}
++
++	return 0;
++}
++
+ #ifndef TEST_ETHTOOL
+ int send_ioctl(struct cmd_context *ctx, void *cmd)
+ {
+@@ -5933,6 +5984,17 @@ static const struct option args[] = {
+ 		.func	= do_nway_rst,
+ 		.help	= "Restart N-WAY negotiation"
+ 	},
++	{
++		.opts   = "-b|--show-loopback",
++		.func   = do_gloopback,
++		.help   = "Show device loopback mode",
++	},
++	{
++		.opts   = "-B|--config-loopback",
++		.func   = do_sloopback,
++		.help   = "{EN|Dis}able device loopback",
++		.xhelp  = "     [ on|off ]\n",
++	},
+ 	{
+ 		.opts	= "-p|--identify",
+ 		.func	= do_phys_id,
+diff --git a/uapi/linux/ethtool.h b/uapi/linux/ethtool.h
+index de358df..5aad5dc 100644
+--- a/uapi/linux/ethtool.h
++++ b/uapi/linux/ethtool.h
+@@ -216,11 +216,13 @@ struct ethtool_wolinfo {
+ 	__u8	sopass[SOPASS_MAX];
+ };
+ 
++#ifndef __phoenix__
+ /* for passing single values */
+ struct ethtool_value {
+ 	__u32	cmd;
+ 	__u32	data;
+ };
++#endif
+ 
+ #define PFC_STORM_PREVENTION_AUTO	0xffff
+ #define PFC_STORM_PREVENTION_DISABLE	0