Hello,
On Fri, Oct 21, 2022 at 11:23:28PM +0200, Michael Traxler wrote:
dnsmasq-2.87:
When you disable the DNS-server via
port=0
the /etc/hosts file is ignored and also the
addn-hosts=<fn>
is ignored.
I was able to reproduce this behaviour. with "port 0" the /etc/hosts seems
not to be loaded and static leases configured using /etc/ethers and
/etc/hosts are not honored.
with other ports (53 and 54 tested), dhcp leases are given as configured in
/etc/hosts
This applies to dnsmasq 2.86 as long as it did to 2.80.
I even see in logs that hosts files aren't logged:
Oct 31 13:18:12 turris dnsmasq[11666]: started, version 2.86 cachesize 150
Oct 31 13:18:12 turris dnsmasq[11666]: read /etc/hosts - 28 addresses
Oct 31 13:18:12 turris dnsmasq[11666]: read /tmp/hosts/dhcp.cfg01411c - 3
addresses
Oct 31 13:18:12 turris dnsmasq[11666]: read /tmp/hosts/odhcpd - 1 addresses
Oct 31 13:18:12 turris dnsmasq-dhcp[11666]: read /etc/ethers - 24 addresses
Oct 31 13:26:13 turris dnsmasq[12187]: started, version 2.86 DNS disabled
Oct 31 13:26:13 turris dnsmasq-dhcp[12187]: read /etc/ethers - 24 addresses
I'm not very skilled in C, so I can only guess:
src/cache.c seems to ignore hosts cache when port is set to 0
there may be of course different places the cache is filled
#ifdef HAVE_DHCP
struct in_addr a_record_from_hosts(char *name, time_t now)
{
struct crec *crecp = NULL;
struct in_addr ret;
/* If no DNS service, cache not initialised. */
if (daemon->port != 0)
^^^^^^^^^^^^^^^^^^^^^^
I guess this the culprit
while ((crecp = cache_find_by_name(crecp, name, now, F_IPV4)))
if (crecp->flags & F_HOSTS)
return crecp->addr.addr4;
my_syslog(MS_DHCP | LOG_WARNING, _("No IPv4 address found for %s"), name);
ret.s_addr = 0;
return ret;
}
--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
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Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
Quantum mechanics: The dreams stuff is made of.
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