diff --git a/include/netfilter.mk b/include/netfilter.mk
index 371571a57e..a6b92a1e92 100644
--- a/include/netfilter.mk
+++ b/include/netfilter.mk
@@ -141,24 +141,12 @@ else
   $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_MARK, $(P_XT)xt_MARK))
 endif
 
-# XXX: tos/TOS extensions have been merged in dscp/DSCP in linux 2.6.25, but not yet in iptables
-ifeq ($(strip $(call CompareKernelPatchVer,$(KERNEL_PATCHVER),ge,2.6.25)),1)
-  # userland only
-  $(eval $(if $(NF_KMOD),,$(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_DSCP, $(P_XT)xt_tos)))
-  $(eval $(if $(NF_KMOD),,$(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_DSCP, $(P_XT)xt_TOS)))
-else
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_TOS, $(P_V4)ipt_tos))
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_TOS, $(P_V4)ipt_TOS))
-endif
-
-ifeq ($(strip $(call CompareKernelPatchVer,$(KERNEL_PATCHVER),ge,2.6.30)),1)
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_HL, $(P_XT)xt_hl))
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_HL, $(P_XT)xt_HL))
-else
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_MATCH_TTL, $(P_V4)ipt_ttl))
-  $(eval $(call nf_add,IPT_IPOPT,CONFIG_IP_NF_TARGET_TTL, $(P_V4)ipt_TTL))
-endif
+# userland only
+$(eval $(if $(NF_KMOD),,$(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_DSCP, $(P_XT)xt_tos)))
+$(eval $(if $(NF_KMOD),,$(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_DSCP, $(P_XT)xt_TOS)))
 
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_HL, $(P_XT)xt_hl))
+$(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_HL, $(P_XT)xt_HL))
 
 # iprange