1 files changed, 9 insertions, 1 deletions

diff --git a/net/6lowpan/iphc.c b/net/6lowpan/iphc.c
index 73a7065f0c6b..cd5f8b8e34cd 100644
--- a/net/6lowpan/iphc.c
+++ b/net/6lowpan/iphc.c
@@ -512,9 +512,17 @@ static u8 lowpan_compress_addr_64(u8 **hc_ptr, u8 shift,
 
 static void compress_udp_header(u8 **hc_ptr, struct sk_buff *skb)
 {
-        struct udphdr *uh = udp_hdr(skb);
+        struct udphdr *uh;
         u8 tmp;
 
+        /* In the case of RAW sockets the transport header is not set by
+         * the ip6 stack so we must set it ourselves
+         */
+        if (skb->transport_header == skb->network_header)
+                skb_set_transport_header(skb, sizeof(struct ipv6hdr));
+
+        uh = udp_hdr(skb);
+
         if (((ntohs(uh->source) & LOWPAN_NHC_UDP_4BIT_MASK) ==
              LOWPAN_NHC_UDP_4BIT_PORT) &&
             ((ntohs(uh->dest) & LOWPAN_NHC_UDP_4BIT_MASK) ==