Gracias por darme la ip de la facultad de informatica, andaba buscando una para descartar los dnss. Tampoco puedo navegar por ahi, asi que no debe ser ese el problema. En log del router me sale esto:
| Date/Time | Facility | Severity | Message |
| Jan 1 00:00:31 | user | warn | kernel: Built 1 zonelists |
| Jan 1 00:00:31 | user | warn | kernel: Kernel command line: root=31:0 ro noinitrd |
| Jan 1 00:00:31 | user | warn | kernel: brcm mips: enabling icache and dcache... |
| Jan 1 00:00:31 | user | warn | kernel: Primary instruction cache 16kB, physically tagged, 2-way, linesize 16 bytes. |
| Jan 1 00:00:31 | user | warn | kernel: Primary data cache 8kB 2-way, linesize 16 bytes. |
| Jan 1 00:00:31 | user | warn | kernel: PID hash table entries: 64 (order 6: 512 bytes) |
| Jan 1 00:00:31 | user | warn | kernel: Using 128.000 MHz high precision timer. |
| Jan 1 00:00:31 | user | warn | kernel: Dentry cache hash table entries: 4096 (order: 2, 16384 bytes) |
| Jan 1 00:00:31 | user | warn | kernel: Inode-cache hash table entries: 2048 (order: 1, 8192 bytes) |
| Jan 1 00:00:31 | user | warn | kernel: Calibrating delay loop... 255.59 BogoMIPS |
| Jan 1 00:00:31 | user | warn | kernel: Mount-cache hash table entries: 512 (order: 0, 4096 bytes) |
| Jan 1 00:00:31 | user | warn | kernel: Checking for 'wait' instruction... unavailable. |
| Jan 1 00:00:31 | user | warn | kernel: Can't analyze prologue code at 80157714 |
| Jan 1 00:00:31 | user | warn | kernel: Using noop io scheduler |
| Jan 1 00:00:31 | user | warn | kernel: bcm963xx_mtd driver v1.0 |
| Jan 1 00:00:31 | user | warn | kernel: brcmboard: brcm_board_init entry |
| Jan 1 00:00:31 | user | warn | kernel: bcm963xx_serial driver v2.0 |
| Jan 1 00:00:31 | user | warn | kernel: VFS: Mounted root (squashfs filesystem) readonly. |
| Jan 1 00:00:31 | user | warn | kernel: Algorithmics/MIPS FPU Emulator v1.5 |
| Jan 1 00:00:31 | user | warn | kernel: atmapi: module license 'Proprietary' taints kernel. |
| Jan 1 00:00:31 | user | warn | kernel: blaadd: blaa_detect entry |
| Jan 1 00:00:31 | user | warn | kernel: adsl: adsl_init entry |
| Jan 1 00:00:31 | user | warn | kernel: Broadcom BCM6348A2 Ethernet Network Device v0.3 Aug 13 2008 09:25:12 |
| Jan 1 00:00:31 | user | warn | kernel: Config Ethernet Switch Through SPI Slave Select 1 |
| Jan 1 00:00:31 | user | warn | kernel: eth0: MAC Address: 00:30:DA:60:59:BF |
| Jan 1 00:00:31 | user | warn | kernel: Broadcom BCM6348A2 USB Network Device v0.4 Aug 13 2008 09:25:13 |
| Jan 1 00:00:31 | user | warn | kernel: usb0: MAC Address: 00 30 DA 60 59 C0 |
| Jan 1 00:00:31 | user | warn | kernel: usb0: Host MAC Address: 00 30 DA 60 59 C1 |
| Jan 1 00:00:31 | user | warn | kernel: PCI: Enabling device 0000:00:01.0 (0004 -> 0006) |
| Jan 1 00:00:31 | user | warn | kernel: dgasp: kerSysRegisterDyingGaspHandler: wl0 registered |
| Jan 1 00:00:31 | user | warn | kernel: wl0: Broadcom BCM4320 802.11 Wireless Controller 3.91.41.0 |
| Jan 1 00:00:31 | user | warn | kernel: BcmAdsl_Initialize=0xC0054208, g_pFnNotifyCallback=0xC00673B4 |
| Jan 1 00:00:31 | user | crit | kernel: eth0 Link UP. |
| Jan 1 00:00:31 | user | warn | kernel: AdslCoreHwReset: AdslOemDataAddr = 0xA0FFB404 |
| Jan 1 00:00:31 | user | warn | kernel: dgasp: kerSysRegisterDyingGaspHandler: dsl0 registered |
| Jan 1 00:00:31 | user | warn | kernel: ip_tables: (C) 2000-2002 Netfilter core team |
| Jan 1 00:00:31 | user | warn | kernel: ip_conntrack version 2.1 (125 buckets, 0 max) - 368 bytes per conntrack |
| Jan 1 00:00:31 | user | warn | kernel: ip_conntrack_rtsp: falsely claims to have parameter setup_timeout |
| Jan 1 00:00:31 | user | warn | kernel: ip_conntrack_rtsp v0.01 loading |
| Jan 1 00:00:31 | user | warn | kernel: ip_nat_rtsp v0.01 loading |
| Jan 1 00:00:31 | user | warn | kernel: ip_nat_pptp: Unknown symbol ip_ct_gre_keymap_change |
| Jan 1 00:00:31 | user | crit | kernel: ADSL G.994 training |
| Jan 1 00:00:31 | user | crit | kernel: ADSL G.992 channel analysis |
| Jan 1 00:00:31 | user | crit | kernel: ADSL link up, interleaved, us=320, ds=3008 |
En el device info del comtrend, telefonica aparece como PPPDown. Y en la primera pantalla al abrir el router, sale vacio el campo 'Default Gateway', vamos que no me han asignado una IP...
Cuando se corto, estaba navegando tranquilamente, y de repente, sin cortarse la luz verde deje de poder navegar. A ver si consigo que alguien de la zona me diga si le va bien. Mi codigo postal es el 28669. Un saludo.