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Make sure we return the IPv6 address we suggested in response to a

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SOLICIT. Also do not put the address in the "used" pool list when
loading from file.

See RT ticket #17153 for more.
This commit is contained in:
Shane Kerr 2007-10-03 10:20:25 +00:00
parent e9c596456f
commit 1b5053b526
3 changed files with 28 additions and 3 deletions
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4
RELNOTES
View File

@ -61,6 +61,10 @@ suggested fixes to <dhcp-users@isc.org>.
- Log messages when failover peer names mismatch have been improved to
point out the problem.
- Bug where server advertised a IPv6 address in response to a SOLICIT
but would not return the address in response to a REQUEST. Thanks to
Dennis Kou for finding the bug.
Changes since 4.0.0a2
- Fix for startup where there are no IPv4 addresses on an interface.

23
server/dhcpv6.c
View File

@ -834,6 +834,7 @@ pick_v6_address(struct iaaddr **addr,
int i;
int start_pool;
unsigned int attempts;
char tmp_buf[INET6_ADDRSTRLEN];
/*
* First, find the link address where the packet from the client
@ -861,7 +862,8 @@ pick_v6_address(struct iaaddr **addr,
first_link_addr, sizeof(*first_link_addr));
subnet = NULL;
if (!find_subnet(&subnet, tmp_addr, MDL)) {
log_debug("No subnet found for link-address %s.",
log_debug("Unable to pick client address: "
"no subnet found for link-address %s.",
piaddr(tmp_addr));
return ISC_R_NOTFOUND;
}
@ -887,6 +889,8 @@ pick_v6_address(struct iaaddr **addr,
*/
if (shared_network->ipv6_pools == NULL) {
shared_network_dereference(&shared_network, MDL);
log_debug("Unable to pick client address: "
"no IPv6 pools on this shared network");
return ISC_R_NORESOURCES;
}
@ -903,9 +907,16 @@ pick_v6_address(struct iaaddr **addr,
ipv6_pool_reference(pool, p, MDL);
shared_network_dereference(&shared_network,
MDL);
log_debug("Picking requested address %s",
inet_ntop(AF_INET6,
requested_iaaddr->data,
tmp_buf, sizeof(tmp_buf)));
return ISC_R_SUCCESS;
}
}
log_debug("NOT picking requested address %s",
inet_ntop(AF_INET6, requested_iaaddr->data,
tmp_buf, sizeof(tmp_buf)));
}
/*
@ -937,6 +948,9 @@ pick_v6_address(struct iaaddr **addr,
shared_network->last_ipv6_pool = i;
shared_network_dereference(&shared_network, MDL);
log_debug("Picking pool address %s",
inet_ntop(AF_INET6, &((*addr)->addr),
tmp_buf, sizeof(tmp_buf)));
return ISC_R_SUCCESS;
}
@ -951,6 +965,7 @@ pick_v6_address(struct iaaddr **addr,
* Presumably that means we have no addresses for the client.
*/
shared_network_dereference(&shared_network, MDL);
log_debug("Unable to pick client address: no addresses available");
return ISC_R_NORESOURCES;
}
@ -1617,6 +1632,12 @@ lease_to_client(struct data_string *reply_ret,
lease, /* XXX */ NULL,
opt_state);
}
/*
* On SOLICIT, we want to forget this lease since we're
* not actually doing anything with it.
*/
} else {
release_lease6(lease->ipv6_pool, lease);
}
} else {

4
server/mdb6.c
View File

@ -724,10 +724,10 @@ add_lease6(struct ipv6_pool *pool, struct iaaddr *iaaddr,
*/
tmp_iaaddr = NULL;
iaaddr_reference(&tmp_iaaddr, iaaddr, MDL);
iaaddr_hash_add(pool->addrs, &tmp_iaaddr->addr,
sizeof(tmp_iaaddr->addr), iaaddr, MDL);
if ((tmp_iaaddr->state == FTS_ACTIVE) ||
(tmp_iaaddr->state == FTS_ABANDONED)) {
iaaddr_hash_add(pool->addrs, &tmp_iaaddr->addr,
sizeof(tmp_iaaddr->addr), iaaddr, MDL);
insert_result = isc_heap_insert(pool->active_timeouts,
tmp_iaaddr);
if (insert_result == ISC_R_SUCCESS)