Signed-off-by: Isaku Yamahata <yamah...@valinux.co.jp>
---
ryu/lib/packet/ipv4.py | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/ryu/lib/packet/ipv4.py b/ryu/lib/packet/ipv4.py
index daf4265..4f48e93 100644
--- a/ryu/lib/packet/ipv4.py
+++ b/ryu/lib/packet/ipv4.py
@@ -23,6 +23,11 @@ from . import tcp
from ryu.ofproto import inet
+IPV4_ADDRESS_PACK_STR = '!I'
+IPV4_ADDRESS_LEN = struct.calcsize(IPV4_ADDRESS_PACK_STR)
+IPV4_PSEUDO_HEADER_PACK_STR = '!II2xHH'
+
+
class ipv4(packet_base.PacketBase):
_PACK_STR = '!BBHHHBBHII'
_MIN_LEN = struct.calcsize(_PACK_STR)
--
1.7.10.4
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