Ignore DNS servers without an interface for now

diff --git a/src/resolver.c b/src/resolver.c
index dec1357..5fc01a6 100644 (file)
--- a/src/resolver.c
+++ b/src/resolver.c
@@ -328,6 +328,9 @@ static int resolvfile_append(const char *interface, const char *domain,
 
        DBG("interface %s server %s", interface, server);
 
+       if (interface == NULL)
+               return -ENOENT;
+
        fd = open("/etc/resolv.conf", O_RDWR | O_CREAT,
                                        S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
        if (fd < 0)