bug 208: must clear flags bits in fragment offset deserialization.

2008-06-04 10:39:36 -07:00
parent 10a7924d63
commit 1eb07aeaef
1 changed files with 1 additions and 2 deletions
--- a/src/node/ipv4-header.cc
+++ b/src/node/ipv4-header.cc
@@ -300,9 +300,8 @@ Ipv4Header::Deserialize (Buffer::Iterator start)
    {
      m_flags |= MORE_FRAGMENTS;
    }
-  //XXXX I think we should clear some bits in fragmentOffset !
  i.Prev ();
-  m_fragmentOffset = i.ReadNtohU16 ();
+  m_fragmentOffset = i.ReadNtohU16 () & 0xfff8;
  m_fragmentOffset *= 8;
  m_ttl = i.ReadU8 ();
  m_protocol = i.ReadU8 ();