add -F flag, which configures sysctl(8) setting by rtsold

itself (rather than warn about the current setting).

Obtained from:	KAME

1 files changed, 16 insertions, 0 deletions

diff --git a/usr.sbin/rtsold/if.c b/usr.sbin/rtsold/if.c
index 99a1b0e..23e4e6f 100644
--- a/usr.sbin/rtsold/if.c
+++ b/usr.sbin/rtsold/if.c
@@ -300,6 +300,22 @@ getinet6sysctl(int code)
 		return value;
 }
 
+int
+setinet6sysctl(int code, int newval)
+{
+	int mib[] = { CTL_NET, PF_INET6, IPPROTO_IPV6, 0 };
+	int value;
+	size_t size;
+
+	mib[3] = code;
+	size = sizeof(value);
+	if (sysctl(mib, sizeof(mib)/sizeof(mib[0]), &value, &size,
+	    &newval, sizeof(newval)) < 0)
+		return -1;
+	else
+		return value;
+}
+
 /*------------------------------------------------------------*/
 
 /* get ia6_flags for link-local addr on if.  returns -1 on error. */