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| author | Lennart Poettering <lennart@poettering.net> | 2015-08-21 22:51:05 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-08-21 22:51:05 +0200 |
| commit | 9e08a6e0ce6ae37189666fd2517e643e971e45b1 (patch) | |
| tree | 39e4229d2058c0847bf9d07ba1017b07abdf0f0a | |
| parent | 0a18f3e59f887f27431759443374cd559fce729d (diff) | |
resolved: add extra check for family when doing LLMNR TCP connections
It shouldn't happen that we try to resolve IPv4 addresses via LLMNR on
IPv6 and vice versa, but let's explicitly verify that we don't turn an
IPv4 LLMNR lookup into an IPv6 TCP connection.
| -rw-r--r-- | src/resolve/resolved-dns-transaction.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c index 73bfbb7ed4..3fc4063917 100644 --- a/src/resolve/resolved-dns-transaction.c +++ b/src/resolve/resolved-dns-transaction.c @@ -271,6 +271,8 @@ static int dns_transaction_open_tcp(DnsTransaction *t) { return r; if (r == 0) return -EINVAL; + if (family != t->scope->family) + return -EAFNOSUPPORT; fd = dns_scope_tcp_socket(t->scope, family, &address, LLMNR_PORT, NULL); } |