On Fri, 06 Feb 2004 12:55:06 +0000, Roy Hills wrote: > The man page for raw(7) contains two conflicting statements for the use of > IPPROTO_RAW > with raw sockets. One statement says that such a socket is receive only; > the other says that > it is send only. > > In the Description section of raw(7), it says the following regarding > IPPROTO_RAW: > "A protocol of IPPROTO_RAW implies enabled IP_HDRINCL and receives all IP > protocols. Sending is not allowed." > > Later, in the Notes section, it says this which contradicts the earlier > statement: > "An IPPROTO_RAW socket is send only. If you really want to > receive all IP packets use a packet(7) socket with the ETH_P_IP protocol."
As of 2.10-1 it reads | A protocol of | .B IPPROTO_RAW | implies enabled | .B IP_HDRINCL | and is able to send any IP protocol that is specified in the passed | header. | Receiving of all IP protocols via | .B IPPROTO_RAW | is not possible using raw sockets. and | An | .B IPPROTO_RAW | socket is send only. | If you really want to receive all IP packets use a | .BR packet (7) | socket with the | .B ETH_P_IP | protocol. Note that packet sockets don't reassemble IP fragments, | unlike raw sockets. This has been fixed in the infodrom CVS r1.2-1.6, so I guess this bug could simply be closed for version 1.58-1. HTH, Flo
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