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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2019-07-02 15:03:47 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2019-07-02 15:03:47 +0200 |
| commit | b6946084296525f0e2aa3e72df7b896cc98197d7 (patch) | |
| tree | 662ae8da14038db4e9002984e8825420090ffe11 /networking/ntpd.c | |
| parent | c0961e09b200cbe4f243cbb588362904eaa1ce60 (diff) | |
| download | busybox-b6946084296525f0e2aa3e72df7b896cc98197d7.tar.gz | |
ntpd: add comment about mode6, no code changes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'networking/ntpd.c')
| -rw-r--r-- | networking/ntpd.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/networking/ntpd.c b/networking/ntpd.c index 465c74d6c..48dc1c379 100644 --- a/networking/ntpd.c +++ b/networking/ntpd.c @@ -2238,6 +2238,13 @@ recv_and_process_client_pkt(void /*int fd*/) from = xzalloc(to->len); size = recv_from_to(G_listen_fd, &msg, sizeof(msg), MSG_DONTWAIT, from, &to->u.sa, to->len); + + /* "ntpq -p" (4.2.8p13) sends a 12-byte NTPv2 request: + * m_status is 0x16: leap:0 version:2 mode:6(reserved1) + * https://docs.ntpsec.org/latest/mode6.html + * We don't support this. + */ + #if ENABLE_FEATURE_NTP_AUTH if (size != NTP_MSGSIZE_NOAUTH && size != NTP_MSGSIZE_MD5_AUTH && size != NTP_MSGSIZE_SHA1_AUTH) #else |