D-Link DSL-2500U / BRU / D D4

Overview
D-Link DSL-2500U/BRU/D rev. D4 ADSL/ADSL2/ADSL2+ Modem (Router/Bridge)

Links of Interest

 * D-Link DSL-2500U on OpenWrt Wiki
 * DSL-2500U/BRU/D directory on D-link FTP archive
 * D-Link DSL-25xxU/BRU/x on the blog of Michael V. Pudeev (RU)
 * Reconnect PPPoE on modem DSL-2500U (RU)
 * ADSL Modem Hardware (RU)