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-rw-r--r--src/resolve/resolved-dns-transaction.c2
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);
}