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@@ -4425,6 +4425,11 @@ test_util_socketpair(void *arg)
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* Otherwise, we risk exposing a socketpair on a routable IP address. (Some
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* BSD jails use a routable address for localhost. Fortunately, they have
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* the real AF_UNIX socketpair.) */
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+ if (-socketpair_result == SOCK_ERRNO(EINVAL)) {
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+ /* In my testing, an IPv6-only FreeBSD jail without ::1 returned EINVAL.
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+ * Assume we're on a machine without 127.0.0.1 or ::1 and give up now. */
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+ goto done;
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+ }
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tt_int_op(0, OP_EQ, socketpair_result);
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tt_assert(SOCKET_OK(fds[0]));
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tt_assert(SOCKET_OK(fds[1]));
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