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-rw-r--r--ryu/ofproto/inet.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/ryu/ofproto/inet.py b/ryu/ofproto/inet.py
index d0ce694f..6990b72d 100644
--- a/ryu/ofproto/inet.py
+++ b/ryu/ofproto/inet.py
@@ -17,6 +17,7 @@
IPPROTO_IP = 0
IPPROTO_HOPOPTS = 0
IPPROTO_ICMP = 1
+IPPROTO_IGMP = 2
IPPROTO_TCP = 6
IPPROTO_UDP = 17
IPPROTO_ROUTING = 43