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-rw-r--r--include/sparse/netinet/in.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sparse/netinet/in.h b/include/sparse/netinet/in.h
index d51722e95..c63dca70d 100644
--- a/include/sparse/netinet/in.h
+++ b/include/sparse/netinet/in.h
@@ -61,6 +61,7 @@ struct sockaddr_in6 {
#define IPPROTO_IPV6 41
#define IPPROTO_HOPOPTS 0
#define IPPROTO_ICMP 1
+#define IPPROTO_IGMP 2
#define IPPROTO_TCP 6
#define IPPROTO_UDP 17
#define IPPROTO_ROUTING 43