IP_UNBLOCK_SOURCE(2const)

IP_UNBLOCK_SOURCE2const

Unblock multicast source

Usage

#include <netinet/in.h>  /* Definition of IP* constants */
#include <sys/socket.h>

int setsockopt(int sockfd, IPPROTO_IP, IP_UNBLOCK_SOURCE, const struct ip_mreq_source *src, sizeof(struct ip_mreq_source));

Library

Standard C library (libc, -lc)

Overview

Unblock previously blocked multicast source.

Fails with EADDRNOTAVAIL when given source is not being blocked.

Errors

See IPPROTO_IP(2const). See setsockopt(2). See ip(7).

History

Linux 2.4.22, Linux 2.5.68.

From man-pages 6.19-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.