diff --git a/src/detect-template2.c b/src/detect-template2.c
deleted file mode 100644
index de215c3636..0000000000
--- a/src/detect-template2.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/* Copyright (C) 2007-2020 Open Information Security Foundation
- *
- * You can copy, redistribute or modify this Program under the terms of
- * the GNU General Public License version 2 as published by the Free
- * Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- */
-
-/**
- * \file
- *
- * \author XXX
- *
- */
-
-#include "suricata-common.h"
-#include "util-byte.h"
-
-#include "detect.h"
-#include "detect-parse.h"
-#include "detect-engine-prefilter-common.h"
-#include "detect-engine-uint.h"
-
-#include "detect-template2.h"
-
-
-/* prototypes */
-static int DetectTemplate2Match (DetectEngineThreadCtx *, Packet *,
-        const Signature *, const SigMatchCtx *);
-static int DetectTemplate2Setup (DetectEngineCtx *, Signature *, const char *);
-void DetectTemplate2Free (DetectEngineCtx *, void *);
-#ifdef UNITTESTS
-void DetectTemplate2RegisterTests (void);
-#endif
-static int PrefilterSetupTemplate2(DetectEngineCtx *de_ctx, SigGroupHead *sgh);
-static bool PrefilterTemplate2IsPrefilterable(const Signature *s);
-
-/**
- * \brief Registration function for template2: keyword
- */
-
-void DetectTemplate2Register(void)
-{
-    sigmatch_table[DETECT_TEMPLATE2].name = "template2";
-    sigmatch_table[DETECT_TEMPLATE2].desc = "TODO describe the keyword";
-    // TODO sigmatch_table[DETECT_TEMPLATE2].url = "/rules/header-keywords.html#template2";
-    sigmatch_table[DETECT_TEMPLATE2].Match = DetectTemplate2Match;
-    sigmatch_table[DETECT_TEMPLATE2].Setup = DetectTemplate2Setup;
-    sigmatch_table[DETECT_TEMPLATE2].Free = DetectTemplate2Free;
-    sigmatch_table[DETECT_TEMPLATE2].SupportsPrefilter = PrefilterTemplate2IsPrefilterable;
-    sigmatch_table[DETECT_TEMPLATE2].SetupPrefilter = PrefilterSetupTemplate2;
-    sigmatch_table[DETECT_TEMPLATE2].flags = SIGMATCH_INFO_UINT8;
-}
-
-/**
- * \brief This function is used to match TEMPLATE2 rule option on a packet with those passed via
- * template2:
- *
- * \param t pointer to thread vars
- * \param det_ctx pointer to the pattern matcher thread
- * \param p pointer to the current packet
- * \param m pointer to the sigmatch that we will cast into DetectU8Data
- *
- * \retval 0 no match
- * \retval 1 match
- */
-static int DetectTemplate2Match (DetectEngineThreadCtx *det_ctx, Packet *p,
-        const Signature *s, const SigMatchCtx *ctx)
-{
-    DEBUG_VALIDATE_BUG_ON(PKT_IS_PSEUDOPKT(p));
-
-    /* TODO replace this */
-    uint8_t ptemplate2;
-    if (PacketIsIPv4(p)) {
-        const IPV4Hdr *ip4h = PacketGetIPv4(p);
-        ptemplate2 = IPV4_GET_RAW_IPTTL(ip4h);
-    } else if (PacketIsIPv6(p)) {
-        const IPV6Hdr *ip6h = PacketGetIPv6(p);
-        ptemplate2 = IPV6_GET_RAW_HLIM(ip6h);
-    } else {
-        SCLogDebug("Packet is of not IPv4 or IPv6");
-        return 0;
-    }
-
-    const DetectU8Data *template2d = (const DetectU8Data *)ctx;
-    return DetectU8Match(ptemplate2, template2d);
-}
-
-/**
- * \brief this function is used to add the parsed template2 data into the current signature
- *
- * \param de_ctx pointer to the Detection Engine Context
- * \param s pointer to the Current Signature
- * \param template2str pointer to the user provided template2 options
- *
- * \retval 0 on Success
- * \retval -1 on Failure
- */
-static int DetectTemplate2Setup (DetectEngineCtx *de_ctx, Signature *s, const char *template2str)
-{
-    DetectU8Data *template2d = DetectU8Parse(template2str);
-    if (template2d == NULL)
-        return -1;
-
-    if (SCSigMatchAppendSMToList(de_ctx, s, DETECT_TEMPLATE2, (SigMatchCtx *)template2d,
-                DETECT_SM_LIST_MATCH) == NULL) {
-        DetectTemplate2Free(de_ctx, template2d);
-        return -1;
-    }
-    s->flags |= SIG_FLAG_REQUIRE_PACKET;
-
-    return 0;
-}
-
-/**
- * \brief this function will free memory associated with DetectU8Data
- *
- * \param ptr pointer to DetectU8Data
- */
-void DetectTemplate2Free(DetectEngineCtx *de_ctx, void *ptr)
-{
-    SCDetectU8Free(ptr);
-}
-
-/* prefilter code */
-
-static void
-PrefilterPacketTemplate2Match(DetectEngineThreadCtx *det_ctx, Packet *p, const void *pectx)
-{
-    DEBUG_VALIDATE_BUG_ON(PKT_IS_PSEUDOPKT(p));
-
-    uint8_t ptemplate2;
-/* TODO update */
-    if (PacketIsIPv4(p)) {
-        const IPV4Hdr *ip4h = PacketGetIPv4(p);
-        ptemplate2 = IPV4_GET_RAW_IPTTL(ip4h);
-    } else if (PacketIsIPv6(p)) {
-        const IPV6Hdr *ip6h = PacketGetIPv6(p);
-        ptemplate2 = IPV6_GET_RAW_HLIM(ip6h);
-    } else {
-        SCLogDebug("Packet is of not IPv4 or IPv6");
-        return;
-    }
-
-    /* during setup Suricata will automatically see if there is another
-     * check that can be added: alproto, sport or dport */
-    const PrefilterPacketHeaderCtx *ctx = pectx;
-    if (!PrefilterPacketHeaderExtraMatch(ctx, p))
-        return;
-
-    DetectU8Data du8;
-    du8.mode = ctx->v1.u8[0];
-    du8.arg1 = ctx->v1.u8[1];
-    du8.arg2 = ctx->v1.u8[2];
-    /* if we match, add all the sigs that use this prefilter. This means
-     * that these will be inspected further */
-    if (DetectU8Match(ptemplate2, &du8)) {
-        SCLogDebug("packet matches template2/hl %u", ptemplate2);
-        PrefilterAddSids(&det_ctx->pmq, ctx->sigs_array, ctx->sigs_cnt);
-    }
-}
-
-static int PrefilterSetupTemplate2(DetectEngineCtx *de_ctx, SigGroupHead *sgh)
-{
-    return PrefilterSetupPacketHeader(de_ctx, sgh, DETECT_TEMPLATE2, SIG_MASK_REQUIRE_REAL_PKT,
-            PrefilterPacketU8Set, PrefilterPacketU8Compare, PrefilterPacketTemplate2Match);
-}
-
-static bool PrefilterTemplate2IsPrefilterable(const Signature *s)
-{
-    return PrefilterIsPrefilterableById(s, DETECT_TEMPLATE2);
-}