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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | ERRORS | HISTORY | SEE ALSO | COLOPHON |
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IPPROTO_IPV6(2const) IPPROTO_IPV6(2const)
IPPROTO_IPV6 - Linux IPv6 protocol socket options
Standard C library (libc, -lc)
#include <netinet/in.h> /* Definition of IP* constants */
#include <sys/socket.h>
int setsockopt(int sockfd, IPPROTO_IPV6, int opt,
const void val[size], size_t size);
int getsockopt(int sockfd, IPPROTO_IPV6, int opt,
void val[size], size_t size);
IPv6 supports some protocol-specific socket options that can be
set with setsockopt(2) and read with getsockopt(2). The socket
option level for IPv6 is IPPROTO_IPV6. A boolean integer flag is
zero when it is false, otherwise true.
The following socket options are supported.
IPV6_ADDRFORM(2const)
IPV6_ADD_MEMBERSHIP(2const)
IPV6_DROP_MEMBERSHIP(2const)
IPV6_MTU(2const)
IPV6_MTU_DISCOVER(2const)
IPV6_MULTICAST_HOPS(2const)
IPV6_MULTICAST_IF(2const)
IPV6_MULTICAST_LOOP(2const)
IPV6_RECVPKTINFO(2const)
IPV6_RTHDR(2const)
IPV6_AUTHHDR(2const)
IPV6_DSTOPTS(2const)
IPV6_HOPOPTS(2const)
IPV6_FLOWINFO(2const)
IPV6_HOPLIMIT(2const)
IPV6_RECVERR(2const)
IPV6_ROUTER_ALERT(2const)
IPV6_UNICAST_HOPS(2const)
IPV6_V6ONLY(2const)
See setsockopt(2). See ipv6(7).
ENOPROTOOPT
opt is invalid.
IPPROTO_IPV6
POSIX.1-2001.
setsockopt(2), cmsg(3), ipv6(7)
This page is part of the man-pages (Linux kernel and C library
user-space interface documentation) project. Information about
the project can be found at
⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report
for this manual page, see
⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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2026-05-24. If you discover any rendering problems in this HTML
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man-pages@man7.org
Linux man-pages 6.18 2026-01-05 IPPROTO_IPV6(2const)
Pages that refer to this page: IPV6_ADD_MEMBERSHIP(2const), IPV6_ADDRFORM(2const), IPV6_MTU(2const), IPV6_MTU_DISCOVER(2const), IPV6_MULTICAST_HOPS(2const), IPV6_MULTICAST_IF(2const), IPV6_MULTICAST_LOOP(2const), IPV6_RECVERR(2const), IPV6_RECVPKTINFO(2const), IPV6_ROUTER_ALERT(2const), IPV6_RTHDR(2const), IPV6_UNICAST_HOPS(2const), IPV6_V6ONLY(2const), ipv6(7)
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HTML rendering created 2026-05-24 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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