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Add address filtering for leasequery.

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Simon Kelley
2025-04-23 16:47:50 +01:00
parent 692ed0dd32
commit 48658ebc54
5 changed files with 41 additions and 9 deletions
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man/dnsmasq.8
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@@ -1438,9 +1438,10 @@ DHCP options. This make extra space available in the DHCP packet for
options but can, rarely, confuse old or broken clients. This flag
forces "simple and safe" behaviour to avoid problems in such a case.
.TP
.B --leasequery
.B --leasequery[=<addr>]
Enable RFC 4388 leasequery. The dnsmasq DHCP server will answer LEASEQUERY messages from DHCP relays
when this option is given. To correctly answer lease queries it is necessary to store extra data in
when this option is given. If an address is given, only queries from a relay at that address are allowed. Repeat
the --leasequery option to specify multiple addresses. To correctly answer lease queries it is necessary to store extra data in
the lease database, and this is also enabled by the \fB--leasequery\fP option. The extra fields
(agent-info and vendorclass) are stored in the leases file in a somewhat backwards compatible manner.
Enabling and then disabling leasequery will not cause problems; the extra information will be aged