diff options
| author | Sebastian Benoit <benno@cvs.openbsd.org> | 2015-10-20 20:22:43 +0000 |
|---|---|---|
| committer | Sebastian Benoit <benno@cvs.openbsd.org> | 2015-10-20 20:22:43 +0000 |
| commit | 88ab0d0c810f11565e2824074aeaa22271362d2b (patch) | |
| tree | 7f8afa300de5e1b2210cf5ad9e2de9573bff4acc /share | |
| parent | d0745ab1593a099ccda19b36e5f94bc6bb482393 (diff) | |
add a new getsockopt option IP_IPDEFTTL to retrieve the default ttl.
this can be used as an alternative to sysctl net.inet.ip.ttl, in
programs that use pledge().
ok reyk@, "Like this" deraadt@
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man4/ip.4 | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/share/man/man4/ip.4 b/share/man/man4/ip.4 index 537d6e7226b..72b60dc7545 100644 --- a/share/man/man4/ip.4 +++ b/share/man/man4/ip.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: ip.4,v 1.36 2015/09/10 17:55:21 schwarze Exp $ +.\" $OpenBSD: ip.4,v 1.37 2015/10/20 20:22:42 benno Exp $ .\" $NetBSD: ip.4,v 1.3 1994/11/30 16:22:19 jtc Exp $ .\" .\" Copyright (c) 1983, 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)ip.4 8.2 (Berkeley) 11/30/93 .\" -.Dd $Mdocdate: September 10 2015 $ +.Dd $Mdocdate: October 20 2015 $ .Dt IP 4 .Os .Sh NAME @@ -97,8 +97,10 @@ fields in the .Tn IP header for .Dv SOCK_STREAM -and +, .Dv SOCK_DGRAM +and +.Dv SOCK_RAW sockets. For example, .Bd -literal -offset indent @@ -109,6 +111,9 @@ int ttl = 60; /* max = 255 */ setsockopt(s, IPPROTO_IP, IP_TTL, &ttl, sizeof(ttl)); .Ed .Pp +.Dv IP_IPDEFTTL +can be used to retrieve the system wide default ttl. +.Pp If the .Dv IP_RECVDSTADDR option is enabled on a |