diff --git a/src/network/wlanconfig.lua b/src/network/wlanconfig.lua
index 1e72933..637b586 100644
--- a/src/network/wlanconfig.lua
+++ b/src/network/wlanconfig.lua
@@ -25,14 +25,14 @@ local deviceName, deviceApi
 local cachedApSsid, baseApSsid = nil, nil
 
 function M.getSubstitutedSsid(unformattedSsid)
+	log:debug("getSubstitutedSsid unformattedSsid:'" .. unformattedSsid .. "' baseApSsid:'" .. (baseApSsid or "nil") .. "' cachedApSsid:'" .. (cachedApSsid or "nil"))
 	if unformattedSsid == baseApSsid and cachedApSsid ~= nil then return cachedApSsid end
 	if not unformattedSsid or type(unformattedSsid) ~= 'string' then return nil end
 
 	local macTail = M.getMacAddress():sub(7)
-
+	log:debug("  macTail:'" .. macTail)
 	baseApSsid = unformattedSsid
 	cachedApSsid = unformattedSsid:gsub('%%%%MAC_ADDR_TAIL%%%%', macTail)
-
 	return cachedApSsid
 end
 
@@ -107,7 +107,9 @@ end
 --returns the wireless device's MAC address (as string, without colons)
 --(lua numbers on openWrt seem to be 32bit so they cannot represent a MAC address as one number)
 function M.getMacAddress()
+	log:debug("getMacAddress")
 	local macText = utils.readFile('/sys/class/net/' .. deviceName .. '/address')
+	log:debug("  macText: '" .. (macText or "nil") .. "'")
 	local out = ''
 
 	-- Hack to prevent failure in case the MAC address could not be obtained.