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nslookup: glibc + IPv6 address of DNS server don't mix (yet)

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Denis Vlasenko 2008-11-17 15:36:36 +00:00
parent de7a52fff2
commit 249d948e39
1 changed files with 9 additions and 4 deletions
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13
networking/nslookup.c
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@ -133,14 +133,19 @@ static void set_default_dns(const char *server)
_res.nsaddr_list[0] = lsa->u.sin;
}
#if ENABLE_FEATURE_IPV6
// Hoping libc will handle an IPv4 address there too,
// if it so happens that family is indeed AF_INET
// if (lsa->u.sa.sa_family == AF_INET6) {
/* Hoped libc can cope with IPv4 address there too.
* No such luck, glibc 2.4 segfaults even with IPv6,
* maybe I misunderstand how to make glibc use IPv6 addr?
* (uclibc 0.9.31+ should work) */
if (lsa->u.sa.sa_family == AF_INET6) {
// glibc neither SEGVs nor sends any dgrams with this
// (strace shows no socket ops):
//_res.nscount = 0;
_res._u._ext.nscount = 1;
/* store a pointer to part of malloc'ed lsa */
_res._u._ext.nsaddrs[0] = &lsa->u.sin6;
/* must not free(lsa)! */
// }
}
#endif
}