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From 5ad3e4de4bedeeff0751b44a85032f48b9b6452c Mon Sep 17 00:00:00 2001
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From: Brent Cook <busterb@gmail.com>
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Date: Tue, 30 Dec 2014 09:10:22 -0600
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Subject: [PATCH 01/15] Handle IPv6 DNS records on IPv4 networks more liberally
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Rather than fail on IPv4 only networks when seeing an IPv6 DNS record,
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just give a warning.
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Debian bug ID: 500676.
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Original Author: Stefan Praszalowicz <stefan.praszalowicz@avedya.com>
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---
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src/usr.sbin/ntpd/client.c | 13 ++++++++++---
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1 file changed, 10 insertions(+), 3 deletions(-)
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diff --git a/src/usr.sbin/ntpd/client.c b/src/usr.sbin/ntpd/client.c
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index 3de52685b1..aa9fc24c68 100644
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--- a/src/usr.sbin/ntpd/client.c
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+++ b/src/usr.sbin/ntpd/client.c
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@@ -140,9 +140,16 @@ client_query(struct ntp_peer *p)
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struct sockaddr *qa4 = (struct sockaddr *)&p->query_addr4;
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struct sockaddr *qa6 = (struct sockaddr *)&p->query_addr6;
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- if ((p->query->fd = socket(p->addr->ss.ss_family, SOCK_DGRAM,
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- 0)) == -1)
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- fatal("client_query socket");
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+ p->query->fd = socket(p->addr->ss.ss_family, SOCK_DGRAM, 0);
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+ if (p->query->fd == -1) {
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+ if (errno == EAFNOSUPPORT) {
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+ log_warn("client_query socket");
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+ client_nextaddr(p);
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+ set_next(p, error_interval());
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+ return (-1);
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+ } else
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+ fatal("client_query socket");
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+ }
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if (p->addr->ss.ss_family == qa4->sa_family) {
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if (bind(p->query->fd, qa4, SA_LEN(qa4)) == -1)
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--
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2.21.0
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