an entire packet with each read system call.
This facility is protocol specific, and presently implemented
only for
-.Dv PF_NS .
+.Dv PF_NS
+and
+.Dv PF_UNIX .
.Dv SOCK_RAW
sockets provide access to internal network protocols and interfaces.
The types
The
.Ux Ns -domain
family supports the
-.Dv SOCK_STREAM
-and
+.Dv SOCK_STREAM ,
.Dv SOCK_DGRAM
+and
+.Dv SOCK_SEQPACKET
socket types and uses
filesystem pathnames for addressing.
.Sh ADDRESSING
.Ux Ns -domain
protocol family is comprised of simple
transport protocols that support the
-.Dv SOCK_STREAM
-and
+.Dv SOCK_STREAM ,
.Dv SOCK_DGRAM
+and
+.Dv SOCK_SEQPACKET
abstractions.
-.Dv SOCK_STREAM
+.Dv SOCK_STREAM ,
+.Dv SOCK_DGRAM
+and
+.Dv SOCK_SEQPACKET
sockets also support the communication of
.Ux
file descriptors through the use of the