According to RFC791,the options may appear or not in datagrams.
They must be implemented by all IP modules (host and gateways).
What is optional is their transmission in any particular datagram,
not their implementation. So we have to deal with it during the
fragmenting process.
Add some test data for the IPv4 header optional field fragmenting.
Signed-off-by: Huichao Cai <chcchc88@163.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
b50a14a853