From: Sophie Brun <sophie@kali.org>
Date: Mon, 21 Dec 2020 15:14:14 +0100
Subject: Fix test failure on IPv6-only build daemons

Do not run the assertion if the IPv4 connection attempt fails
for some reason, like the unavailablity of IPv4 networking on some
IPv6-only build daemons.

Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=976844
---
 boreas/util_tests.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/boreas/util_tests.c b/boreas/util_tests.c
index efa8811..4703d4a 100644
--- a/boreas/util_tests.c
+++ b/boreas/util_tests.c
@@ -161,8 +161,9 @@ Ensure (util, get_source_addr_v4)
   /* Destination is example.com. */
   src.s_addr = INADDR_ANY;
   dst.s_addr = inet_addr ("93.184.216.34");
-  get_source_addr_v4 (&udpv4soc, &dst, &src);
-  assert_that (src.s_addr, is_not_equal_to (INADDR_ANY));
+  if (get_source_addr_v4 (&udpv4soc, &dst, &src) == 0) {
+    assert_that (src.s_addr, is_not_equal_to (INADDR_ANY));
+  }
 
   /* Close socket. */
   close (udpv4soc);
