Defines the default maximum UDP socket receive buffer size. For more information, see udp_max_buf.
57,344 bytes
128 to 1,073,741,824 bytes
Yes
Note that an application can use setsockopt(3XNET) SO_RCVBUF to change the size for an individual socket. In general, you do not need to change the default value.
Unstable
For information, see udp_recv_hiwat (Solaris 9 Releases).