summaryrefslogtreecommitdiff
path: root/Documentation/networking/dns_resolver.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/networking/dns_resolver.txt')
-rw-r--r--Documentation/networking/dns_resolver.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/networking/dns_resolver.txt b/Documentation/networking/dns_resolver.txt
index 7f531ad83285..d86adcdae420 100644
--- a/Documentation/networking/dns_resolver.txt
+++ b/Documentation/networking/dns_resolver.txt
@@ -102,6 +102,10 @@ implemented in the module can be called after doing:
If _expiry is non-NULL, the expiry time (TTL) of the result will be
returned also.
+The kernel maintains an internal keyring in which it caches looked up keys.
+This can be cleared by any process that has the CAP_SYS_ADMIN capability by
+the use of KEYCTL_KEYRING_CLEAR on the keyring ID.
+
===============================
READING DNS KEYS FROM USERSPACE