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Fix round robin for failed addresses with prefer-ip6: yes

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git-svn-id: file:///svn/unbound/trunk@4775 be551aaa-1e26-0410-a405-d3ace91eadb9
This commit is contained in:
Wouter Wijngaards 2018-07-06 14:14:19 +00:00
parent f2e90b0872
commit 86f16bef93
1 changed files with 9 additions and 1 deletions
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10
iterator/iter_utils.c
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@ -375,12 +375,20 @@ iter_filter_order(struct iter_env* iter_env, struct module_env* env,
int got_num6 = 0;
int low_rtt6 = 0;
int i;
int attempt = -1; /* filter to make sure addresses have
less attempts on them than the first, to force round
robin when all the IPv6 addresses fail */
prev = NULL;
a = dp->result_list;
for(i = 0; i < got_num; i++) {
swap_to_front = 0;
if(a->addr.ss_family == AF_INET6) {
if(a->addr.ss_family != AF_INET6 && attempt == -1)
attempt = a->attempts;
if(a->addr.ss_family == AF_INET6 &&
(attempt==-1 || a->attempts<=attempt)) {
got_num6++;
if(attempt == -1)
attempt = a->attempts;
swap_to_front = 1;
if(low_rtt6 == 0 || a->sel_rtt < low_rtt6) {
low_rtt6 = a->sel_rtt;