Messages in this thread | | | From | Herbert Rosmanith <> | Subject | SOCK_PACKET: ETH_P_ALL vs. ETH_P_IP | Date | Sun, 14 Apr 1996 04:46:19 +0200 (MET DST) |
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hi
suppose I open a socket with:
s=socket(AF_INET, SOCK_PACKET, htons(ETH_P_ALL));
then I'll get all packets sent and received from/to the machine a program using this call is running. however, when one does:
s=socket(AF_INET, SOCK_PACKET, htons(ETH_P_IP));
only those packets *sent* to the machine are put into the program. a packet, that is generated on the local machine and is sent out onto the the network will not be put into this socket.
is this the correct behaviour ? I thought that ETH_P_IP means "all IP packets ?" regardless of source/destination.
NB: it's not neccessary to put the IF into promisc. mode.
/herp herp@wildsau.idv.uni-linz.ac.at
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