diff --git a/README.html b/README.html
index f316e0c..2f6fb02 100644
--- a/README.html
+++ b/README.html
@@ -868,9 +868,23 @@ problem. After starting uxplay, use the utility
avahi-browse -a -t in a different terminal window on the
server to verify that the UxPlay AirTunes and AirPlay services are
correctly registered (only the AirTunes service is used in the “Legacy”
-AirPlay Mirror mode used by UxPlay). If the UxPlay service is listed by
-avahi-browse, but is not seen by the client, the problem is likely to be
-a problem with the local network.
+AirPlay Mirror mode used by UxPlay).
+The results returned by avahi-browse should show entries for uxplay
+like
++ eno1 IPv6 UxPlay AirPlay Remote Video local
++ eno1 IPv4 UxPlay AirPlay Remote Video local
++ lo IPv4 UxPlay AirPlay Remote Video local
++ eno1 IPv6 863EA27598FE@UxPlay AirTunes Remote Audio local
++ eno1 IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
++ lo IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
+
+If only the loopback (“lo”) entries are shown, a firewall on the
+UxPlay host is probably blocking full DNS-SD service, and you need to
+open the default UDP port 5353 for mDNS requests, as loopback-based
+DNS-SD service is unreliable.
+If the UxPlay service is listed by avahi-browse, but is not seen by
+the client, the problem is likely to be a problem with the local
+network.
2.
uxplay starts, but stalls after “Initialized server socket(s)” appears,
diff --git a/README.md b/README.md
index a4ed698..8e5fa79 100644
--- a/README.md
+++ b/README.md
@@ -721,11 +721,31 @@ uncomment a line for airplay support._)
If UxPlay stalls _without an error message_ and _without the server name showing on the client_, this is either pre-UxPlay-1.60
behavior when no DNS-SD server was found, or a network problem.
-After starting uxplay, use the utility ```avahi-browse -a -t``` in a different terminal window on the server to
+After starting uxplay, use the utility ``avahi-browse -a -t`` in a different terminal window on the server to
verify that the UxPlay AirTunes and AirPlay services are correctly registered (only the AirTunes service is
-used in the "Legacy" AirPlay Mirror mode used by UxPlay). If the UxPlay service is listed by avahi-browse, but is not seen by the client,
+used in the "Legacy" AirPlay Mirror mode used by UxPlay).
+
+The results returned by avahi-browse should show entries for
+uxplay like
+
+
+```
++ eno1 IPv6 UxPlay AirPlay Remote Video local
++ eno1 IPv4 UxPlay AirPlay Remote Video local
++ lo IPv4 UxPlay AirPlay Remote Video local
++ eno1 IPv6 863EA27598FE@UxPlay AirTunes Remote Audio local
++ eno1 IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
++ lo IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
+
+```
+If only the loopback ("lo") entries are shown, a firewall on the UxPlay host
+is probably blocking full DNS-SD service, and you need to open the default UDP port 5353 for mDNS requests,
+as loopback-based DNS-SD service is unreliable.
+
+If the UxPlay service is listed by avahi-browse, but is not seen by the client,
the problem is likely to be a problem with the local network.
+
### 2. uxplay starts, but stalls after "Initialized server socket(s)" appears, *with the server name showing on the client* (but the client fails to connect when the UxPlay server is selected).
This shows that a *DNS-SD* service is working, but a firewall on the server is probably blocking the connection request from the client.
diff --git a/README.txt b/README.txt
index a5a3f8c..f018eb8 100644
--- a/README.txt
+++ b/README.txt
@@ -387,7 +387,7 @@ running if the ssh session is closed. Terminal output is saved to FILE
- **Red Hat, or clones like CentOS (now continued as Rocky Linux or
Alma Linux):** (sudo dnf install, or sudo yum install) openssl-devel
libplist-devel avahi-compat-libdns_sd-devel (some from the
- "CodeReady" \[called "PowerTools" by clones\] add-on repository)
+ "CodeReady" add-on repository, called "PowerTools" by clones)
(+libX11-devel for fullscreen X11, and "ZOOMFIX" if needed). The
required GStreamer packages are: gstreamer1-devel
gstreamer1-plugins-base-devel gstreamer1-libav
@@ -396,7 +396,7 @@ running if the ssh session is closed. Terminal output is saved to FILE
from [rpmfusion.org](https://rpmfusion.org) (which provides packages
including plugins that RedHat does not ship for license reasons).
*\[In recent **Fedora**, the libav plugin package is renamed to
- "gstreamer1-plugin-libav". which now needs the RPM Fusion package
+ "gstreamer1-plugin-libav", which now needs the RPM Fusion package
ffmpeg-libs for the patent-encumbered code which RedHat does not
provide: check with "`rpm -qi ffmpeg-libs`" that it lists "Packager"
as RPM Fusion; if this is not installed, uxplay will fail to start,
@@ -887,9 +887,24 @@ DNS-SD server was found, or a network problem. After starting uxplay,
use the utility `avahi-browse -a -t` in a different terminal window on
the server to verify that the UxPlay AirTunes and AirPlay services are
correctly registered (only the AirTunes service is used in the "Legacy"
-AirPlay Mirror mode used by UxPlay). If the UxPlay service is listed by
-avahi-browse, but is not seen by the client, the problem is likely to be
-a problem with the local network.
+AirPlay Mirror mode used by UxPlay).
+
+The results returned by avahi-browse should show entries for uxplay like
+
+ + eno1 IPv6 UxPlay AirPlay Remote Video local
+ + eno1 IPv4 UxPlay AirPlay Remote Video local
+ + lo IPv4 UxPlay AirPlay Remote Video local
+ + eno1 IPv6 863EA27598FE@UxPlay AirTunes Remote Audio local
+ + eno1 IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
+ + lo IPv4 863EA27598FE@UxPlay AirTunes Remote Audio local
+
+If only the loopback ("lo") entries are shown, a firewall on the UxPlay
+host is probably blocking full DNS-SD service, and you need to open the
+default UDP port 5353 for mDNS requests, as loopback-based DNS-SD
+service is unreliable.
+
+If the UxPlay service is listed by avahi-browse, but is not seen by the
+client, the problem is likely to be a problem with the local network.
### 2. uxplay starts, but stalls after "Initialized server socket(s)" appears, *with the server name showing on the client* (but the client fails to connect when the UxPlay server is selected).