SnmpValue mac = getValue(IPNETTOMEDIA_TABLE_PHYSADDR);
String hexString = mac.toHexString();
if (hexString != null && isValidBridgeAddress(hexString))
return hexString;
try{
<BUG>if (mac.isDisplayable())

return normalizeMacAddress(mac.toDisplayString());
} catch (IllegalArgumentException e) {</BUG>
LOG.warn("IllegalArgument mac on ipnettomediatable:  return null", e);

SnmpValue mac = getValue(IPNETTOMEDIA_TABLE_PHYSADDR);
String hexString = mac.toHexString();
if (hexString != null && isValidBridgeAddress(hexString))
return hexString;
try{
if (mac.isDisplayable()) {
String displayString = mac.toDisplayString();
return displayString == null || displayString.trim().isEmpty() ? null : normalizeMacAddress(displayString);
}
} catch (IllegalArgumentException e) {
LOG.warn("IllegalArgument mac on ipnettomediatable:  return null", e);
