diff options
Diffstat (limited to 'lib/sockunion.c')
-rw-r--r-- | lib/sockunion.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/sockunion.c b/lib/sockunion.c index f6c060f5..a32809c1 100644 --- a/lib/sockunion.c +++ b/lib/sockunion.c @@ -537,6 +537,28 @@ sockopt_cork (int sock, int onoff) #endif } +int +sockopt_minttl (int family, int sock, int minttl) +{ + int ret; + + zlog_debug ("sockopt_minttl: set minttl to %d", minttl); + +#ifdef IP_MINTTL + ret = setsockopt (sock, IPPROTO_IP, IP_MINTTL, &minttl, sizeof(minttl)); +#else + ret = -1; + errno = EOPNOTSUPP; +#endif /* IP_MINTTL */ + if (ret < 0) + { + zlog (NULL, LOG_WARNING, "can't set sockopt IP_MINTTL to %d on socket %d: %s", minttl, sock, safe_strerror (errno)); + return -1; + } + + return 0; +} + /* If same family and same prefix return 1. */ int sockunion_same (union sockunion *su1, union sockunion *su2) |