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- Fix #422: IPv6 fallback issues when IPv6 is not properly

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enabled/configured.
This commit is contained in:
W.C.A. Wijngaards 2021-02-15 14:40:48 +01:00
parent ee0a65250a
commit 74e06cc4b3
4 changed files with 36 additions and 0 deletions
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3
daemon/worker.c
View file

@ -70,6 +70,7 @@
#include "util/edns.h"
#include "iterator/iter_fwd.h"
#include "iterator/iter_hints.h"
#include "iterator/iter_utils.h"
#include "validator/autotrust.h"
#include "validator/val_anchor.h"
#include "respip/respip.h"
@ -1821,6 +1822,8 @@ worker_init(struct worker* worker, struct config_file *cfg,
worker_delete(worker);
return 0;
}
iterator_set_ip46_support(&worker->daemon->mods, worker->daemon->env,
worker->back);
/* start listening to commands */
if(!tube_setup_bg_listen(worker->cmd, worker->base,
&worker_handle_control_cmd, worker)) {

4
doc/Changelog
View file

@ -1,3 +1,7 @@
15 February 2021: Wouter
- Fix #422: IPv6 fallback issues when IPv6 is not properly
enabled/configured.
10 February 2021: Wouter
- Merge PR #420 from dyunwei: DOH not responsing with
"http2_query_read_done failure" logged.

15
iterator/iter_utils.c
View file

@ -50,6 +50,7 @@
#include "services/cache/infra.h"
#include "services/cache/dns.h"
#include "services/cache/rrset.h"
#include "services/outside_network.h"
#include "util/net_help.h"
#include "util/module.h"
#include "util/log.h"
@ -1435,3 +1436,17 @@ iter_stub_fwd_no_cache(struct module_qstate *qstate, struct query_info *qinf)
}
return 0;
}
void iterator_set_ip46_support(struct module_stack* mods,
struct module_env* env, struct outside_network* outnet)
{
int m = modstack_find(mods, "iterator");
struct iter_env* ie = NULL;
if(m == -1)
return;
ie = (struct iter_env*)env->modinfo[m];
if(outnet->num_ip4 == 0)
ie->supports_ipv4 = 0;
if(outnet->num_ip6 == 0)
ie->supports_ipv6 = 0;
}

14
iterator/iter_utils.h
View file

@ -59,6 +59,8 @@ struct reply_info;
struct module_qstate;
struct sock_list;
struct ub_packed_rrset_key;
struct module_stack;
struct outside_network;
/**
* Process config options and set iterator module state.
@ -385,4 +387,16 @@ int iter_dp_cangodown(struct query_info* qinfo, struct delegpt* dp);
int iter_stub_fwd_no_cache(struct module_qstate *qstate,
struct query_info *qinf);
/**
* Set support for IP4 and IP6 depending on outgoing interfaces
* in the outside network. If none, no support, so no use to lookup
* the AAAA and then attempt to use it if there is no outgoing-interface
* for it.
* @param mods: modstack to find iterator module in.
* @param env: module env, find iterator module (if one) in there.
* @param outnet: outside network structure.
*/
void iterator_set_ip46_support(struct module_stack* mods,
struct module_env* env, struct outside_network* outnet);
#endif /* ITERATOR_ITER_UTILS_H */