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Add dhcp-ignore-clid configuration option

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The idea of this option was already discussed years ago on the mailing
list:
https://dnsmasq-discuss.thekelleys.org.narkive.com/ZoFQNaGo/always-ignore-client-identifier#post4

In our production environnement, we discovered that some devices are
using 'client identifier' not unique at all, resulting on IP addresses
conflicts between several devices (we saw up to four devices using same
IP address).

The root cause is probably a buggy operating system/configuration of
decices, but this patch add a configuration workaround on server side
when fixing clients is impossible.

Signed-off-by: Charles Daymand <charles.daymand@wifirst.fr>
Signed-off-by: Florent Fourcot <florent.fourcot@wifirst.fr>
This commit is contained in:
Florent Fourcot
2019-06-20 10:26:40 +02:00
committed by Simon Kelley
parent 19b0e3bf21
commit 13a58f9590
6 changed files with 23 additions and 3 deletions
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3
src/dnsmasq.h
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@@ -261,7 +261,8 @@ struct event_desc {
#define OPT_TFTP_APREF_MAC 56
#define OPT_RAPID_COMMIT 57
#define OPT_UBUS 58
#define OPT_LAST 59
#define OPT_IGNORE_CLID 59
#define OPT_LAST 60
#define OPTION_BITS (sizeof(unsigned int)*8)
#define OPTION_SIZE ( (OPT_LAST/OPTION_BITS)+((OPT_LAST%OPTION_BITS)!=0) )