util.prosodyctl.check: Point out if A/AAAA exists despite disabled IPvX

Clients would try to connect and receive an error or timeout, increasing
the time it takes to establish a connection. Probably not what you want.
If you really want IPv6 or IPv4 disabled, best remove the A or AAAA record.

1 files changed, 10 insertions, 0 deletions

diff --git a/util/prosodyctl/check.lua b/util/prosodyctl/check.lua
index f8c8c55e..f2d0d0df 100644
--- a/util/prosodyctl/check.lua
+++ b/util/prosodyctl/check.lua
@@ -518,6 +518,16 @@ local function check(arg)
 					end
 				end
 
+				if host_ok_v4 and not use_ipv4 then
+					print("    Host "..target_host.." does seem to resolve to this server but IPv4 has been disabled");
+					all_targets_ok = false;
+				end
+
+				if host_ok_v6 and not use_ipv6 then
+					print("    Host "..target_host.." does seem to resolve to this server but IPv6 has been disabled");
+					all_targets_ok = false;
+				end
+
 				local bad_protos = {}
 				if use_ipv4 and not host_ok_v4 then
 					table.insert(bad_protos, "IPv4");