This feature is new in the Solaris 9 9/02 release.
Solaris system software now supports Routing Information Protocol version 2 (RIPv2).
RIPv2 adds Classless Inter-Domain Routing (CIDR) and Variable-Length Subnet Mask (VLSM) extensions to the RIPv1 protocol. Message Digest 5 (MD5) extensions protect routers against intentional misdirection by malicious users. The new in.routed implementation also includes a built-in Internet Control Message Protocol (ICMP) Router Discovery (RFC 1256) mechanism.
RIPv2 supports multicast, if the point-to-point links are enabled with multicast. RIPv2 also supports unicast. If you configure a broadcast address by using the /etc/gateways file, then RIPv2 supports broadcast.