diff --git a/extensions/ACCOUNT/libxt_ACCOUNT.c b/extensions/ACCOUNT/libxt_ACCOUNT.c
index 3252f11..670fefa 100644
--- a/extensions/ACCOUNT/libxt_ACCOUNT.c
+++ b/extensions/ACCOUNT/libxt_ACCOUNT.c
@@ -142,7 +142,7 @@ account_tg_save(const void *ip, const struct xt_entry_target *target)
 static struct xtables_target account_tg_reg = {
 	.name          = "ACCOUNT",
 	.revision      = 1,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.version       = XTABLES_VERSION,
 	.size          = XT_ALIGN(sizeof(struct ipt_acc_info)),
 	.userspacesize = offsetof(struct ipt_acc_info, table_nr),
diff --git a/extensions/libxt_CHAOS.c b/extensions/libxt_CHAOS.c
index 9c88961..c9236b7 100644
--- a/extensions/libxt_CHAOS.c
+++ b/extensions/libxt_CHAOS.c
@@ -95,7 +95,7 @@ static void chaos_tg_save(const void *ip, const struct xt_entry_target *target)
 static struct xtables_target chaos_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "CHAOS",
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_chaos_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_chaos_tginfo)),
 	.help          = chaos_tg_help,
diff --git a/extensions/libxt_DELUDE.c b/extensions/libxt_DELUDE.c
index 2586e7a..8bad829 100644
--- a/extensions/libxt_DELUDE.c
+++ b/extensions/libxt_DELUDE.c
@@ -33,7 +33,7 @@ static struct xtables_target delude_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "DELUDE",
 	.revision      = 0,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.help          = delude_tg_help,
 	.parse         = delude_tg_parse,
 	.final_check   = delude_tg_check,
diff --git a/extensions/libxt_DHCPMAC.c b/extensions/libxt_DHCPMAC.c
index d1963d4..cfb5b3a 100644
--- a/extensions/libxt_DHCPMAC.c
+++ b/extensions/libxt_DHCPMAC.c
@@ -84,7 +84,7 @@ static struct xtables_target dhcpmac_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "DHCPMAC",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.help          = dhcpmac_tg_help,
diff --git a/extensions/libxt_ECHO.c b/extensions/libxt_ECHO.c
index abeb1d4..a71cd14 100644
--- a/extensions/libxt_ECHO.c
+++ b/extensions/libxt_ECHO.c
@@ -29,7 +29,7 @@ static void echo_tg_check(unsigned int flags)
 static struct xtables_target echo_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ECHO",
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.help          = echo_tg_help,
 	.parse         = echo_tg_parse,
 	.final_check   = echo_tg_check,
diff --git a/extensions/libxt_IPMARK.c b/extensions/libxt_IPMARK.c
index e3390e1..ecf4fd7 100644
--- a/extensions/libxt_IPMARK.c
+++ b/extensions/libxt_IPMARK.c
@@ -151,7 +151,7 @@ ipmark_tg_save(const void *entry, const struct xt_entry_target *target)
 static struct xtables_target ipmark_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "IPMARK",
-	.family        = PF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.revision      = 1,
 	.size          = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_ipmark_tginfo)),
diff --git a/extensions/libxt_LOGMARK.c b/extensions/libxt_LOGMARK.c
index 671175a..2cc7745 100644
--- a/extensions/libxt_LOGMARK.c
+++ b/extensions/libxt_LOGMARK.c
@@ -100,7 +100,7 @@ static struct xtables_target logmark_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "LOGMARK",
 	.revision      = 0,
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.size          = XT_ALIGN(sizeof(struct xt_logmark_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_logmark_tginfo)),
 	.help          = logmark_tg_help,
diff --git a/extensions/libxt_RAWDNAT.c b/extensions/libxt_RAWDNAT.c
index 6a43750..002682b 100644
--- a/extensions/libxt_RAWDNAT.c
+++ b/extensions/libxt_RAWDNAT.c
@@ -154,7 +154,7 @@ static struct xtables_target rawdnat_tg4_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWDNAT",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawdnat_tg_help,
@@ -169,7 +169,7 @@ static struct xtables_target rawdnat_tg6_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWDNAT",
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawdnat_tg_help,
diff --git a/extensions/libxt_RAWSNAT.c b/extensions/libxt_RAWSNAT.c
index f718df9..62be4b4 100644
--- a/extensions/libxt_RAWSNAT.c
+++ b/extensions/libxt_RAWSNAT.c
@@ -154,7 +154,7 @@ static struct xtables_target rawsnat_tg4_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWSNAT",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawsnat_tg_help,
@@ -169,7 +169,7 @@ static struct xtables_target rawsnat_tg6_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "RAWSNAT",
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_rawnat_tginfo)),
 	.help          = rawsnat_tg_help,
diff --git a/extensions/libxt_STEAL.c b/extensions/libxt_STEAL.c
index 275ad84..d69ce2f 100644
--- a/extensions/libxt_STEAL.c
+++ b/extensions/libxt_STEAL.c
@@ -19,7 +19,7 @@ static void steal_tg_check(unsigned int flags)
 static struct xtables_target steal_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "STEAL",
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.help          = steal_tg_help,
 	.parse         = steal_tg_parse,
 	.final_check   = steal_tg_check,
diff --git a/extensions/libxt_SYSRQ.c b/extensions/libxt_SYSRQ.c
index 815b084..d5b2f31 100644
--- a/extensions/libxt_SYSRQ.c
+++ b/extensions/libxt_SYSRQ.c
@@ -25,7 +25,7 @@ static struct xtables_target sysrq_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "SYSRQ",
 	.revision      = 1,
-	.family        = PF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.help          = sysrq_tg_help,
 	.parse         = sysrq_tg_parse,
 	.final_check   = sysrq_tg_check,
diff --git a/extensions/libxt_TARPIT.c b/extensions/libxt_TARPIT.c
index 257b3ab..2e34849 100644
--- a/extensions/libxt_TARPIT.c
+++ b/extensions/libxt_TARPIT.c
@@ -24,7 +24,7 @@ static void tarpit_tg_check(unsigned int flags)
 static struct xtables_target tarpit_tg_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "TARPIT",
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.help          = tarpit_tg_help,
 	.parse         = tarpit_tg_parse,
 	.final_check   = tarpit_tg_check,
diff --git a/extensions/libxt_TEE.c b/extensions/libxt_TEE.c
index 3546fda..b4b36c9 100644
--- a/extensions/libxt_TEE.c
+++ b/extensions/libxt_TEE.c
@@ -138,7 +138,7 @@ static struct xtables_target tee_tg_reg = {
 	.name          = "TEE",
 	.version       = XTABLES_VERSION,
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.help          = tee_tg_help,
@@ -153,7 +153,7 @@ static struct xtables_target tee_tg6_reg = {
 	.name          = "TEE",
 	.version       = XTABLES_VERSION,
 	.revision      = 0,
-	.family        = PF_INET6,
+	.family        = NFPROTO_IPV6,
 	.size          = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_tee_tginfo)),
 	.help          = tee_tg_help,
diff --git a/extensions/libxt_condition.c b/extensions/libxt_condition.c
index eabe72f..538a5bb 100644
--- a/extensions/libxt_condition.c
+++ b/extensions/libxt_condition.c
@@ -80,7 +80,7 @@ static void condition_save(const void *ip, const struct xt_entry_match *match)
 static struct xtables_match condition_mt_reg = {
 	.name 		= "condition",
 	.revision	= 1,
-	.family		= PF_UNSPEC,
+	.family		= NFPROTO_UNSPEC,
 	.version 	= XTABLES_VERSION,
 	.size 		= XT_ALIGN(sizeof(struct xt_condition_mtinfo)),
 	.userspacesize 	= XT_ALIGN(sizeof(struct xt_condition_mtinfo)),
diff --git a/extensions/libxt_dhcpmac.c b/extensions/libxt_dhcpmac.c
index 3d22a4b..997ccac 100644
--- a/extensions/libxt_dhcpmac.c
+++ b/extensions/libxt_dhcpmac.c
@@ -85,7 +85,7 @@ static struct xtables_match dhcpmac_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "dhcpmac",
 	.revision      = 0,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct dhcpmac_info)),
 	.help          = dhcpmac_mt_help,
diff --git a/extensions/libxt_fuzzy.c b/extensions/libxt_fuzzy.c
index de8297e..2d39d0a 100644
--- a/extensions/libxt_fuzzy.c
+++ b/extensions/libxt_fuzzy.c
@@ -103,6 +103,7 @@ static struct xtables_match fuzzy_mt_reg = {
 	.name          = "fuzzy",
 	.revision      = 1,
 	.version       = XTABLES_VERSION,
+	.family        = NFPROTO_UNSPEC,
 	.size          = XT_ALIGN(sizeof(struct xt_fuzzy_mtinfo)),
 	.userspacesize = offsetof(struct xt_fuzzy_mtinfo, packets_total),
 	.help          = fuzzy_mt_help,
diff --git a/extensions/libxt_geoip.c b/extensions/libxt_geoip.c
index ba446a5..133bcfa 100644
--- a/extensions/libxt_geoip.c
+++ b/extensions/libxt_geoip.c
@@ -259,7 +259,7 @@ geoip_save(const void *ip, const struct xt_entry_match *match)
 }
 
 static struct xtables_match geoip_match = {
-	 .family        = AF_INET,
+	 .family        = NFPROTO_IPV4,
 	 .name          = "geoip",
 	 .revision      = 1,
 	 .version       = XTABLES_VERSION,
diff --git a/extensions/libxt_iface.c b/extensions/libxt_iface.c
index 3b21a64..dea1ec6 100644
--- a/extensions/libxt_iface.c
+++ b/extensions/libxt_iface.c
@@ -200,7 +200,7 @@ static struct xtables_match iface_mt_reg = {
 	.version	= XTABLES_VERSION,
 	.name		= "iface",
 	.revision	= 0,
-	.family		= AF_UNSPEC,
+	.family		= NFPROTO_UNSPEC,
 	.size		= XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
 	.userspacesize	= XT_ALIGN(sizeof(struct xt_iface_mtinfo)),
 	.help		= iface_mt_help,
diff --git a/extensions/libxt_ipp2p.c b/extensions/libxt_ipp2p.c
index 1e0d325..2c7e657 100644
--- a/extensions/libxt_ipp2p.c
+++ b/extensions/libxt_ipp2p.c
@@ -229,7 +229,7 @@ static struct xtables_match ipp2p_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ipp2p",
 	.revision      = 1,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct ipt_p2p_info)),
 	.userspacesize = XT_ALIGN(sizeof(struct ipt_p2p_info)),
 	.help          = ipp2p_mt_help,
diff --git a/extensions/libxt_ipv4options.c b/extensions/libxt_ipv4options.c
index f0ad151..32d86e2 100644
--- a/extensions/libxt_ipv4options.c
+++ b/extensions/libxt_ipv4options.c
@@ -161,7 +161,7 @@ static struct xtables_match ipv4options_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "ipv4options",
 	.revision      = 1,
-	.family        = PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_ipv4options_mtinfo1)),
 	.help          = ipv4options_mt_help,
diff --git a/extensions/libxt_length2.c b/extensions/libxt_length2.c
index bcea64c..7609ab1 100644
--- a/extensions/libxt_length2.c
+++ b/extensions/libxt_length2.c
@@ -155,7 +155,7 @@ static struct xtables_match length2_mt_reg = {
 	.version        = XTABLES_VERSION,
 	.name           = "length2",
 	.revision       = 2,
-	.family         = PF_UNSPEC,
+	.family         = NFPROTO_UNSPEC,
 	.size           = XT_ALIGN(sizeof(struct xt_length_mtinfo2)),
 	.userspacesize  = XT_ALIGN(sizeof(struct xt_length_mtinfo2)),
 	.init           = length_mt_init,
diff --git a/extensions/libxt_lscan.c b/extensions/libxt_lscan.c
index 0bcc226..59bc990 100644
--- a/extensions/libxt_lscan.c
+++ b/extensions/libxt_lscan.c
@@ -105,7 +105,7 @@ static struct xtables_match lscan_mt_reg = {
 	.version       = XTABLES_VERSION,
 	.name          = "lscan",
 	.revision      = 0,
-	.family        = AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_lscan_mtinfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_lscan_mtinfo)),
 	.help          = lscan_mt_help,
diff --git a/extensions/libxt_psd.c b/extensions/libxt_psd.c
index 88510d0..c3baff6 100644
--- a/extensions/libxt_psd.c
+++ b/extensions/libxt_psd.c
@@ -139,7 +139,7 @@ static struct xtables_match psd_mt_reg = {
 	.name			= "psd",
 	.version		= XTABLES_VERSION,
 	.revision   	= 1,
-	.family			= PF_INET,
+	.family        = NFPROTO_IPV4,
 	.size			= XT_ALIGN(sizeof(struct xt_psd_info)),
 	.userspacesize	= XT_ALIGN(sizeof(struct xt_psd_info)),
 	.help			= psd_mt_help,
diff --git a/extensions/libxt_quota2.c b/extensions/libxt_quota2.c
index 211b64f..ea64153 100644
--- a/extensions/libxt_quota2.c
+++ b/extensions/libxt_quota2.c
@@ -133,7 +133,7 @@ static void quota_mt2_print(const void *ip, const struct xt_entry_match *match,
 }
 
 static struct xtables_match quota_mt2_reg = {
-	.family        = AF_UNSPEC,
+	.family        = NFPROTO_UNSPEC,
 	.revision      = 3,
 	.name          = "quota2",
 	.version       = XTABLES_VERSION,
diff --git a/extensions/pknock/libxt_pknock.c b/extensions/pknock/libxt_pknock.c
index c6ad809..c423200 100644
--- a/extensions/pknock/libxt_pknock.c
+++ b/extensions/pknock/libxt_pknock.c
@@ -326,7 +326,7 @@ static struct xtables_match pknock_mt_reg = {
 	.name		= "pknock",
 	.version	= XTABLES_VERSION,
 	.revision      = 1,
-	.family		= AF_INET,
+	.family        = NFPROTO_IPV4,
 	.size          = XT_ALIGN(sizeof(struct xt_pknock_mtinfo)),
 	.userspacesize = XT_ALIGN(sizeof(struct xt_pknock_mtinfo)),
 	.help          = pknock_mt_help,
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 6ea935f..2eb00b6 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 
+
 /* Responses from hook functions. */
 #define NF_DROP 0
 #define NF_ACCEPT 1
@@ -37,6 +38,16 @@ enum nf_inet_hooks {
 	NF_INET_NUMHOOKS
 };
 
+enum {
+	NFPROTO_UNSPEC =  0,
+	NFPROTO_IPV4   =  2,
+	NFPROTO_ARP    =  3,
+	NFPROTO_BRIDGE =  7,
+	NFPROTO_IPV6   = 10,
+	NFPROTO_DECNET = 12,
+	NFPROTO_NUMPROTO,
+};
+
 union nf_inet_addr {
 	__u32		all[4];
 	__be32		ip;