diff -Nru xtables-addons-2.12/debian/changelog xtables-addons-2.12/debian/changelog
--- xtables-addons-2.12/debian/changelog	2017-10-31 15:09:28.000000000 -0200
+++ xtables-addons-2.12/debian/changelog	2018-06-20 11:45:55.000000000 -0300
@@ -1,3 +1,11 @@
+xtables-addons (2.12-0.1~16.04.3) xenial; urgency=medium
+
+  * Fix module build error with Linux 4.15 (LP: #1777894)
+    - debian/patches/buildfix-4.14.patch
+    - debian/patches/buildfix-4.15.patch
+
+ -- Marcelo Henrique Cerri <marcelo.cerri@canonical.com>  Wed, 20 Jun 2018 11:45:55 -0300
+
 xtables-addons (2.12-0.1~16.04.2) xenial; urgency=medium
 
   * Fix module build error with Linux 4.12+ (LP: #1724875)
diff -Nru xtables-addons-2.12/debian/patches/buildfix-4.14.patch xtables-addons-2.12/debian/patches/buildfix-4.14.patch
--- xtables-addons-2.12/debian/patches/buildfix-4.14.patch	1969-12-31 21:00:00.000000000 -0300
+++ xtables-addons-2.12/debian/patches/buildfix-4.14.patch	2018-06-19 14:20:53.000000000 -0300
@@ -0,0 +1,24 @@
+From 0a6091b64afc3d67c8a9194b8f6230122384f6d9 Mon Sep 17 00:00:00 2001
+From: Jan Engelhardt <jengelh@inai.de>
+Date: Wed, 22 Nov 2017 18:27:07 +0100
+Subject: [PATCH] DNETMAP: remove NF_CT_ASSERT use
+
+The hooks are already checked by the xtables core (due to struct
+xt_target::hooks).
+---
+ extensions/xt_DNETMAP.c | 4 ----
+ 1 file changed, 4 deletions(-)
+
+--- a/extensions/xt_DNETMAP.c
++++ b/extensions/xt_DNETMAP.c
+@@ -376,10 +376,6 @@
+ #else
+ 	unsigned int hooknum = par->hooknum;
+ #endif
+-
+-	NF_CT_ASSERT(hooknum == NF_INET_POST_ROUTING ||
+-		     hooknum == NF_INET_LOCAL_OUT ||
+-		     hooknum == NF_INET_PRE_ROUTING);
+ 	ct = nf_ct_get(skb, &ctinfo);
+ 
+ 	jttl = tginfo->flags & XT_DNETMAP_TTL ? tginfo->ttl * HZ : jtimeout;
diff -Nru xtables-addons-2.12/debian/patches/buildfix-4.15.patch xtables-addons-2.12/debian/patches/buildfix-4.15.patch
--- xtables-addons-2.12/debian/patches/buildfix-4.15.patch	1969-12-31 21:00:00.000000000 -0300
+++ xtables-addons-2.12/debian/patches/buildfix-4.15.patch	2018-06-19 14:26:23.000000000 -0300
@@ -0,0 +1,48 @@
+From 2b76b68c65c97fc11409088c3c30993324df8500 Mon Sep 17 00:00:00 2001
+From: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
+Date: Thu, 4 Jan 2018 18:50:50 +0100
+Subject: [PATCH] build: support for Linux 4.15
+
+Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
+---
+ extensions/pknock/xt_pknock.c | 16 +++++++++++++++-
+ 1 file changed, 15 insertions(+), 1 deletion(-)
+
+--- a/extensions/pknock/xt_pknock.c
++++ b/extensions/pknock/xt_pknock.c
+@@ -358,10 +358,20 @@
+  * @r: rule
+  */
+ static void
+-peer_gc(unsigned long r)
++peer_gc(
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
++	struct timer_list *tl
++#else
++	unsigned long r
++#endif
++)
+ {
+ 	unsigned int i;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
++	struct xt_pknock_rule *rule = from_timer(rule, tl, timer);
++#else
+ 	struct xt_pknock_rule *rule = (struct xt_pknock_rule *)r;
++#endif
+ 	struct peer *peer;
+ 	struct list_head *pos, *n;
+ 
+@@ -469,9 +479,13 @@
+ 	if (rule->peer_head == NULL)
+ 		goto out;
+ 
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0)
++	timer_setup(&rule->timer, peer_gc, 0);
++#else
+ 	init_timer(&rule->timer);
+ 	rule->timer.function	= peer_gc;
+ 	rule->timer.data	= (unsigned long)rule;
++#endif
+ 
+ 	rule->status_proc = proc_create_data(info->rule_name, 0, pde,
+ 	                    &pknock_proc_ops, rule);
diff -Nru xtables-addons-2.12/debian/patches/series xtables-addons-2.12/debian/patches/series
--- xtables-addons-2.12/debian/patches/series	2017-10-31 15:09:28.000000000 -0200
+++ xtables-addons-2.12/debian/patches/series	2018-06-20 11:41:16.000000000 -0300
@@ -1,2 +1,4 @@
 #automake-1.11.2.patch
 buildfix-4.12.patch
+buildfix-4.14.patch
+buildfix-4.15.patch