diff --git a/include/uapi/linux/socket.h b/include/uapi/linux/socket.h
index 268b9482..debcf26f 100644
--- a/include/uapi/linux/socket.h
+++ b/include/uapi/linux/socket.h
@@ -6,17 +6,24 @@
  * Desired design of maximum size and alignment (see RFC2553)
  */
 #define _K_SS_MAXSIZE	128	/* Implementation specific max size */
-#define _K_SS_ALIGNSIZE	(__alignof__ (struct sockaddr *))
-				/* Implementation specific desired alignment */
 
 typedef unsigned short __kernel_sa_family_t;
 
+/*
+ * The definition uses anonymous union and struct in order to control the
+ * default alignment.
+ */
 struct __kernel_sockaddr_storage {
-	__kernel_sa_family_t	ss_family;		/* address family */
-	/* Following field(s) are implementation specific */
-	char		__data[_K_SS_MAXSIZE - sizeof(unsigned short)];
+	union {
+		struct {
+			__kernel_sa_family_t	ss_family; /* address family */
+			/* Following field(s) are implementation specific */
+			char __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
 				/* space to achieve desired size, */
 				/* _SS_MAXSIZE value minus size of ss_family */
-} __attribute__ ((aligned(_K_SS_ALIGNSIZE)));	/* force desired alignment */
+		};
+		void *__align; /* implementation specific desired alignment */
+	};
+};
 
 #endif /* _LINUX_SOCKET_H */
diff --git a/ip/ipnexthop.c b/ip/ipnexthop.c
index 97f09e74..f35aab52 100644
--- a/ip/ipnexthop.c
+++ b/ip/ipnexthop.c
@@ -186,6 +186,7 @@ static void print_nh_group(FILE *fp, const struct rtattr *grps_attr)
 
 		close_json_object();
 	}
+	print_string(PRINT_FP, NULL, "%s", " ");
 	close_json_array(PRINT_JSON, NULL);
 }
 
diff --git a/lib/json_print.c b/lib/json_print.c
index 4eb2d0dc..43ea69bb 100644
--- a/lib/json_print.c
+++ b/lib/json_print.c
@@ -224,7 +224,7 @@ void print_color_null(enum output_type type,
 	}
 }
 
-/* Print line seperator (if not in JSON mode) */
+/* Print line separator (if not in JSON mode) */
 void print_nl(void)
 {
 	if (!_jw)
diff --git a/lib/utils.c b/lib/utils.c
index 4c43f8fd..95d46ff2 100644
--- a/lib/utils.c
+++ b/lib/utils.c
@@ -168,7 +168,7 @@ static int get_netmask(unsigned int *val, const char *arg, int base)
 	if (!get_unsigned(val, arg, base))
 		return 0;
 
-	/* try coverting dotted quad to CIDR */
+	/* try converting dotted quad to CIDR */
 	if (!get_addr_1(&addr, arg, AF_INET) && addr.family == AF_INET) {
 		int b = mask2bits(addr.data[0]);
 
diff --git a/tc/em_ipt.c b/tc/em_ipt.c
index aa2edd63..b15c3ba5 100644
--- a/tc/em_ipt.c
+++ b/tc/em_ipt.c
@@ -1,5 +1,5 @@
 /*
- * em_ipt.c		IPtables extenstions matching Ematch
+ * em_ipt.c		IPtables extensions matching Ematch
  *
  * (C) 2018 Eyal Birger <eyal.birger@gmail.com>
  *
diff --git a/tc/q_netem.c b/tc/q_netem.c
index 6d748f68..d01450fc 100644
--- a/tc/q_netem.c
+++ b/tc/q_netem.c
@@ -39,7 +39,7 @@ static void explain(void)
 		"			[ loss state P13 [P31 [P32 [P23 P14]]]\n" \
 		"			[ loss gemodel PERCENT [R [1-H [1-K]]]\n" \
 		"			[ ecn ]\n" \
-		"			[ reorder PRECENT [CORRELATION] [ gap DISTANCE ]]\n" \
+		"			[ reorder PERCENT [CORRELATION] [ gap DISTANCE ]]\n" \
 		"			[ rate RATE [PACKETOVERHEAD] [CELLSIZE] [CELLOVERHEAD]]\n" \
 		"			[ slot MIN_DELAY [MAX_DELAY] [packets MAX_PACKETS]" \
 		" [bytes MAX_BYTES]]\n" \
diff --git a/tc/tc_cbq.c b/tc/tc_cbq.c
index c811456b..f56011ad 100644
--- a/tc/tc_cbq.c
+++ b/tc/tc_cbq.c
@@ -1,5 +1,5 @@
 /*
- * tc_cbq.c		CBQ maintanance routines.
+ * tc_cbq.c		CBQ maintenance routines.
  *
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License
diff --git a/tc/tc_filter.c b/tc/tc_filter.c
index 53759a7a..f7d2e4a6 100644
--- a/tc/tc_filter.c
+++ b/tc/tc_filter.c
@@ -74,6 +74,7 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
 	__u32 prio = 0;
 	__u32 protocol = 0;
 	int protocol_set = 0;
+	__u32 block_index = 0;
 	__u32 chain_index;
 	int chain_index_set = 0;
 	char *fhandle = NULL;
@@ -89,7 +90,21 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
 			NEXT_ARG();
 			if (d[0])
 				duparg("dev", *argv);
+			if (block_index) {
+				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
+				return -1;
+			}
 			strncpy(d, *argv, sizeof(d)-1);
+		} else if (matches(*argv, "block") == 0) {
+			NEXT_ARG();
+			if (block_index)
+				duparg("block", *argv);
+			if (d[0]) {
+				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
+				return -1;
+			}
+			if (get_u32(&block_index, *argv, 0) || !block_index)
+				invarg("invalid block index value", *argv);
 		} else if (strcmp(*argv, "root") == 0) {
 			if (req.t.tcm_parent) {
 				fprintf(stderr,
@@ -184,6 +199,9 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
 			fprintf(stderr, "Cannot find device \"%s\"\n", d);
 			return 1;
 		}
+	} else if (block_index) {
+		req.t.tcm_ifindex = TCM_IFINDEX_MAGIC_BLOCK;
+		req.t.tcm_block_index = block_index;
 	}
 
 	if (q) {
@@ -396,7 +414,7 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
 			if (d[0])
 				duparg("dev", *argv);
 			if (block_index) {
-				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exlusive\n");
+				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
 				return -1;
 			}
 			strncpy(d, *argv, sizeof(d)-1);
@@ -405,7 +423,7 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
 			if (block_index)
 				duparg("block", *argv);
 			if (d[0]) {
-				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exlusive\n");
+				fprintf(stderr, "Error: \"dev\" and \"block\" are mutually exclusive\n");
 				return -1;
 			}
 			if (get_u32(&block_index, *argv, 0) || !block_index)
diff --git a/tc/tc_red.c b/tc/tc_red.c
index 3ce3ca42..681ca297 100644
--- a/tc/tc_red.c
+++ b/tc/tc_red.c
@@ -1,5 +1,5 @@
 /*
- * tc_red.c		RED maintanance routines.
+ * tc_red.c		RED maintenance routines.
  *
  *		This program is free software; you can redistribute it and/or
  *		modify it under the terms of the GNU General Public License