diff --git a/lua/zapret-lib.lua b/lua/zapret-lib.lua
index 3d661c1..d6f334f 100644
--- a/lua/zapret-lib.lua
+++ b/lua/zapret-lib.lua
@@ -242,9 +242,9 @@ end
 
 -- if seq is over 2G s and p position comparision can be wrong
 function pos_counter_overflow(desync, mode, reverse)
-	if not desync.track or not desync.track.tcp or (mode~='s' and mode~='p') then return false end
+	if not desync.track or (mode~='s' and mode~='p') then return false end
 	local track_pos = reverse and desync.track.pos.reverse or desync.track.pos.direct
-	return track_pos.tcp.rseq_over_2G
+	return track_pos.tcp and track_pos.tcp.rseq_over_2G
 end
 -- these functions duplicate range check logic from C code
 -- mode must be n,d,b,s,x,a
@@ -1115,7 +1115,7 @@ end
 -- check if desync.outgoing comply with arg.dir or def if it's not present or "out" of they are not present both. dir can be "in","out","any"
 function direction_check(desync, def)
 	local dir = desync.arg.dir or def or "out"
-	return desync.outgoing and desync.arg.dir~="in" or not desync.outgoing and dir~="out"
+	return desync.outgoing and dir~="in" or not desync.outgoing and dir~="out"
 end
 -- if dir "in" or "out" cutoff current desync function from opposite direction
 function direction_cutoff_opposite(ctx, desync, def)
@@ -1481,7 +1481,7 @@ function gzip_file(filename, data, expected_ratio, level, memlevel, compress_blo
 	if not f then
 		error("gzip_file: "..err)
 	end
-	if not write_block_size then compress_block_size=16384 end
+	if not compress_block_size then compress_block_size=16384 end
 	if not expected_ratio then expected_ratio=2 end
 
 	gz = gzip_init(nil, level, memlevel)
diff --git a/nfq2/lua.c b/nfq2/lua.c
index 2b01742..6215046 100644
--- a/nfq2/lua.c
+++ b/nfq2/lua.c
@@ -950,7 +950,7 @@ static int luacall_execution_plan(lua_State *L)
 
 			lua_pushf_args(L,&func->args, -1, false);
 			lua_pushf_str(L,"func", func->func);
-			lua_pushf_int(L,"func_n", ctx->func_n);
+			lua_pushf_int(L,"func_n", n);
 			lua_pushf_str(L,"func_instance", instance);
 			lua_pushf_range(L,"range", range);
 
@@ -1449,7 +1449,7 @@ void lua_pushf_ctrack(lua_State *L, const t_ctrack *ctrack, const t_ctrack_posit
 		lua_pushf_reg(L, "lua_state", ctrack->lua_state);
 		lua_pushf_bool(L, "lua_in_cutoff", ctrack->b_lua_in_cutoff);
 		lua_pushf_bool(L, "lua_out_cutoff", ctrack->b_lua_out_cutoff);
-		lua_pushf_lint(L, "t_start", (lua_Number)ctrack->t_start.tv_sec + ctrack->t_start.tv_nsec/1000000000.);
+		lua_pushf_number(L, "t_start", (lua_Number)ctrack->t_start.tv_sec + ctrack->t_start.tv_nsec/1000000000.);
 
 		lua_pushliteral(L, "pos");
 		lua_createtable(L, 0, 5);
@@ -3260,7 +3260,7 @@ static void lua_init_const(void)
 		{"IPTOS_ECN_ECT1",IPTOS_ECN_ECT1},
 		{"IPTOS_ECN_ECT0",IPTOS_ECN_ECT0},
 		{"IPTOS_ECN_CE",IPTOS_ECN_CE},
-		{"IPTOS_DSCP_MASK",0xF0},
+		{"IPTOS_DSCP_MASK",0xFC},
 		{"IP6F_MORE_FRAG",0x0001}, // in ip6.h it's defined depending of machine byte order
 		{"IPV6_FLOWLABEL_MASK",0x000FFFFF},
 		{"IPV6_FLOWINFO_MASK",0x0FFFFFFF},