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[=<addr>]
+.B --leasequery[=<addr>[/<prefix>]]
Enable RFC 4388 leasequery. The dnsmasq DHCP server will answer LEASEQUERY messages from DHCP relays
-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
+when this option is given. If an address or subnet is given, only queries from a relay at that source are allowed. Repeat
+the --leasequery option to specify multiple allowed sources.
+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
{ '4', ARG_DUP, "set:<tag>,<mac address>", gettext_noop("Map MAC address (with wildcards) to option set."), NULL },
{ LOPT_BRIDGE, ARG_DUP, "<iface>,<alias>..", gettext_noop("Treat DHCP requests on aliases as arriving from interface."), NULL },
{ LOPT_SHARED_NET, ARG_DUP, "<iface>|<addr>,<addr>", gettext_noop("Specify extra networks sharing a broadcast domain for DHCP"), NULL},
- { LOPT_LEASEQUERY, ARG_DUP, "[<addr>]", gettext_noop("Enable RFC 4388 leasequery functions for DHCPv4"), NULL },
+ { LOPT_LEASEQUERY, ARG_DUP, "[<addr>[/prefix>]]", gettext_noop("Enable RFC 4388 leasequery functions for DHCPv4"), NULL },
{ '5', OPT_NO_PING, NULL, gettext_noop("Disable ICMP echo address checking in the DHCP server."), NULL },
{ '6', ARG_ONE, "<path>", gettext_noop("Shell script to run on DHCP lease creation and destruction."), NULL },
{ LOPT_LUASCRIPT, ARG_DUP, "path", gettext_noop("Lua script to run on DHCP lease creation and destruction."), NULL },
struct bogus_addr *baddrp;
for (baddrp = daemon->leasequery_addr; baddrp; baddrp = baddrp->next)
- if (!baddrp->is6 && baddrp->addr.addr4.s_addr == leasequery_source.s_addr)
+ if (!baddrp->is6 && is_same_net_prefix(leasequery_source, baddrp->addr.addr4, baddrp->prefix))
break;
if (!baddrp)
projects / dnsmasq.git / commitdiff