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-rw-r--r--src/mail/ngx_mail.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/mail/ngx_mail.h b/src/mail/ngx_mail.h
index 1068bb368..7c8422894 100644
--- a/src/mail/ngx_mail.h
+++ b/src/mail/ngx_mail.h
@@ -38,7 +38,7 @@ typedef struct {
#if (NGX_MAIL_SSL)
unsigned ssl:1;
#endif
-#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
+#if (NGX_HAVE_INET6)
unsigned ipv6only:1;
#endif
unsigned so_keepalive:2;