AHH!!! This would again kickstart my WCCP & Linux tests....
On Thu, Dec 06, 2001 at 11:00:31AM +0200, Vladimir Ivaschenko wrote: > Hi All, > > Linux kernels v2.4.x do not set IP ID flag on UDP packets with DF > set, at least when sendmsg() is used. Apparently this confuses > Cisco's WCCP (you'll get messages like "duplicate packet ignored" > when you enable WCCP debugging). Attached you will find a patch > which disables MTU PATH DISCOVERY which results in IP IDs being > generated again. > > Apply it in the src/modules/ subdirectory. > > -- > Best Regards > Vladimir Ivaschenko > Certified Linux Engineer (RHCE) > --- wccp2.c.orig Fri Apr 27 17:09:08 2001 > +++ wccp2.c Thu Dec 6 10:39:12 2001 > @@ -512,7 +512,7 @@ > wccp2_service_group_t *g; > wccp2_router_t *r; > struct sockaddr_in wccp2_bind_sa; > -int rc; > +int rc, sockopt_val; > > /* reopen wccp2 socket */ > if ( wccp2_socket != -1 ) > @@ -522,6 +522,13 @@ > fprintf(stderr, "Can't create wccp socket: %s\n", strerror(errno)); > return(MOD_CODE_ERR); > } > + /* Linux 2.4 does not set IP IDs on UDP packets with DF flag by default, > + * force it to do so as Cisco does not like it */ > + #if defined(LINUX) > + sockopt_val=IP_PMTUDISC_DONT; > + setsockopt(wccp2_socket, SOL_IP, IP_MTU_DISCOVER, (char*)&sockopt_val, >sizeof(sockopt_val)); > + #endif > + > fcntl(wccp2_socket, F_SETFL, fcntl(wccp2_socket, F_GETFL, 0)|O_NONBLOCK); > /* bind to port */ > memset(&wccp2_bind_sa, 0, sizeof(wccp2_bind_sa)); -- ------------------------ Hendrik Visage [EMAIL PROTECTED] ===================================================================== If you would like to unsubscribe from this list send message to [EMAIL PROTECTED] with "unsubscribe oops-eng" in message body. Archive is accessible on http://lists.paco.net/oops-eng/
