Unfortunatly, I can't use bpf/pcap solution because I must do some setsockopts (like IP_MULTICAST_IF, IP_MULTICAST_TTL, IP_MULTICAST_ADD_MEMBER etc.) and this can't be done on bpf/pcap. When I'm using IPPROTO_VRRP (ip proto 112), All work fine (and other ip proto type I think). What is the reason that SOCK_RAW don't work with IPPROTO_AH (ip proto 51). For me, it's an IP packet in two cases.
Is there a good way for making a patch with SOCK_RAW, IPPROTO_AH ? I've found another strange thing in SOCK_RAW with IPPROTO_VRRP (112) and IP_HDRINCL setted on it. All received packet contains an IP Header with a bad ip_len. If the packet is 60 bytes long, the ip->ip_len contains 40 bytes. When the packet is 100 bytes long, the ip->ip_len contains 80 bytes. So there is a difference of 20 bytes. I think that the ip header size is substract from ip_len by error on the kernel. What are you think about it ? Regards, Sebastien. -- [EMAIL PROTECTED] [EMAIL PROTECTED] FreeVRRPd project http://www.b0l.org/ ----- Original Message ----- From: <JINMEI Tatuya / [EMAIL PROTECTED]@C#:H (B <[EMAIL PROTECTED]>)> To: "Sebastien Petit" <[EMAIL PROTECTED]> Cc: <[EMAIL PROTECTED]> Sent: Tuesday, April 06, 2004 4:38 AM Subject: Re: SOCK_RAW sockets and IPPROTO_AH > >>>>> On Mon, 5 Apr 2004 15:12:49 +0200, > >>>>> "Sebastien Petit" <[EMAIL PROTECTED]> said: > > > Hi, > > Is there a way to receive AH packets in userland with a SOCK_RAW socket ? > > ie: socket(AF_INET, SOCK_RAW, IPPROTO_AH) ? > > I found that this socket call doesn't work under FreeBSD. On OpenBSD, it works but a recvfrom/read doesn't return any AH packets when it was received on an interface. > > > Is there another proper way to receive AH packets in Userland under FreeBSD ? (bpf/pcap is not a solution because I want to have a socket opened for multicast join) > > Unfortunately, bpf/pcap is the only solution. > > JINMEI, Tatuya > Communication Platform Lab. > Corporate R&D Center, Toshiba Corp. > [EMAIL PROTECTED] > _______________________________________________ > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > > _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
