add include

warning when ipv6 enabled

1 files changed, 1 insertions, 0 deletions

diff --git a/src/dns.c b/src/dns.c
index 2cee0e85..b15dde0a 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -30,6 +30,7 @@
 #include <arpa/inet.h>
 #include <netinet/in.h>
 #include <errno.h>
+#include <unistd.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>