249d948e3
Denis Vlasenko
2008-11-17
Subject
nslookup: glibc + IPv6 address of DNS server don't mix (yet)
Binary
No binary (build failed)
Architecture & Compiler Flags
—
Build Log
(log yok)
Commit Diff GitHub →
networking/nslookup.c+9 -4
| @@ -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 | |
| } | |