.BR IP_TRANSPARENT (2const)
.TQ
.BR IP_TTL (2const)
-.TP
-.BR IP_UNBLOCK_SOURCE " (since Linux 2.4.22 / 2.5.68)"
-Unblock previously blocked multicast source.
-Returns
-.B EADDRNOTAVAIL
-when given source is not being blocked.
-.IP
-Argument is an
-.BR ip_mreq_source (2type)
-structure.
+.TQ
+.BR IP_UNBLOCK_SOURCE (2const)
.TP
.BR SO_PEERSEC " (since Linux 2.6.17)"
If labeled IPSEC or NetLabel is configured on both the sending and
--- /dev/null
+.\" Copyright, the authors of the Linux man-pages project
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.TH IP_UNBLOCK_SOURCE 2const (date) "Linux man-pages (unreleased)"
+.SH NAME
+IP_UNBLOCK_SOURCE
+\-
+unblock multicast source
+.SH LIBRARY
+Standard C library
+.RI ( libc ,\~ \-lc )
+.SH SYNOPSIS
+.nf
+.BR "#include <netinet/in.h>" " /* Definition of " IP* " constants */"
+.B #include <sys/socket.h>
+.P
+.BI int\~setsockopt(int\~ sockfd ,\~IPPROTO_IP,\~IP_UNBLOCK_SOURCE,
+.BI " const\~struct\~ip_mreq_source\~*" src ,
+.B " sizeof(struct\~ip_mreq_source));"
+.fi
+.SH DESCRIPTION
+.TP
+.BR IP_UNBLOCK_SOURCE " (since Linux 2.4.22 / 2.5.68)"
+Unblock previously blocked multicast source.
+Returns
+.B EADDRNOTAVAIL
+when given source is not being blocked.
+.IP
+Argument is an
+.BR ip_mreq_source (2type)
+structure.
+.SH ERRORS
+See
+.BR IPPROTO_IP (2const).
+See
+.BR setsockopt (2).
+See
+.BR ip (7).
+.SH SEE ALSO
+.BR IPPROTO_IP (2const),
+.BR setsockopt (2),
+.BR ip (7)