Hi Bruce, On Sun, 14 May 2006, 14:22-0000, Bruce M Simpson wrote:
> bms 2006-05-14 14:22:49 UTC > > FreeBSD src repository > > Modified files: > sys/netinet in.h ip_output.c ip_var.h > Log: > Fix a long-standing limitation in IPv4 multicast group membership. > > By making the imo_membership array a dynamically allocated vector, > this minimizes disruption to existing IPv4 multicast code. This > change breaks the ABI for the kernel module ip_mroute.ko, and may > cause a small amount of churn for folks working on the IGMPv3 merge. > > Previously, sockets were subject to a compile-time limitation on > the number of IPv4 group memberships, which was hard-coded to 20. > The imo_membership relationship, however, is 1:1 with regards to > a tuple of multicast group address and interface address. Users who > ran routing protocols such as OSPF ran into this limitation on machines > with a large system interface tree. It seems these changes broke carp(4). Now ifconfig carp0 <ip address> panics in ip_carp.c::carp_set_addr() when tries to dereference imo->imo_membership[0] when imo->imo_membership == NULL. -- Maxim Konovalov _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"