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Rework handling of IPv6 address failures

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Skip IPv6 on any error getting the default address (::) if IPv6 is not
explicitly chosen.
This commit is contained in:
Erik Ekman 2021-08-11 09:22:16 +02:00
parent 43a82ef6be
commit ee623a2d84
1 changed files with 13 additions and 14 deletions
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27
src/iodined.c
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@ -2599,22 +2599,21 @@ main(int argc, char **argv)
}
if (addrfamily == AF_UNSPEC || addrfamily == AF_INET6) {
int addr6_res = get_addr(listen_ip6, port, AF_INET6, AI_PASSIVE, &dns6addr);
if (
#ifdef EAI_ADDRFAMILY
addr6_res == EAI_ADDRFAMILY ||
#endif
addr6_res == EAI_FAMILY) {
if (addrfamily == AF_INET6) {
fprintf(stderr, "IPv6 not supported");
exit(4);
if (addr6_res < 0) {
if (listen_ip6 == NULL) {
if (addrfamily == AF_INET6) {
fprintf(stderr, "IPv6 not supported");
exit(3);
} else {
warnx("IPv6 not supported, skipping");
addrfamily = AF_INET;
}
} else {
warnx("IPv6 not supported, skipping");
addrfamily = AF_INET;
warnx("Failed to get IPv6 address to listen on: '%s': %s",
listen_ip6, gai_strerror(addr6_res));
usage();
/* NOTREACHED */
}
} else if (addr6_res < 0) {
warnx("Failed to get IPv6 address to listen on: '%s': %s",
listen_ip6, gai_strerror(addr6_res));
usage();
} else {
dns6addr_len = addr6_res;
}