cisco 878 adsl modem dns problemi

slm arkadaşlar 

 cisco 878 adsl modem kullaniyorum dün e kadar problemsiz  çalişiyordu ama şuanda dns problemi yaşiyorum   bilgisayarimdan dns adresini elle girmeme ragmen bi faydasi olmadi  modemin ara yüzünde dns yi manu el yapmayi denedim(ip name-server 8.8.8.8,ip name-server 8.8.4.4 bilgisayarimdan otomatik ip ve dns yapinca  turk telekomun dns adresini aldigini goruyorum (195.175.39.40 , 195.175.39.39)   bu durumu nasil düzelte bilirim

configürasyon bu şekilde ama ttnetin sayfalarindan başkasını acmiyor

no service password-encryption
!
hostname yourname
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
!
no aaa new-model
!
resource policy
!
ip subnet-zero
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool sdm-pool
   import all
   network 10.10.10.0 255.255.255.0
   default-router 10.10.10.1
!
!
no ip domain lookup
ip domain name yourdomain.com
ip name-server 8.8.8.8
ip name-server 8.8.4.4
!
!
crypto pki trustpoint TP-self-signed-2994439528
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-2994439528
 revocation-check none
 rsakeypair TP-self-signed-2994439528
!
!
c
!
!
!
bridge irb
!
!
interface ATM0
 no ip address
 no atm ilmi-keepalive
 pvc 8/35
  pppoe-client dial-pool-number 1
 !
 dsl operating-mode auto
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Dot11Radio0
 no ip address
 no ip route-cache cef
 no ip route-cache
 !
 encryption mode ciphers tkip
 !
 ssid xxxx
    authentication open
    authentication key-management wpa
    guest-mode
    wpa-psk ascii 0 xxxxxx
 !
 speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0
 channel 2437
 station-role root
 bridge-group 1
 bridge-group 1 subscriber-loop-control
 bridge-group 1 spanning-disabled
 bridge-group 1 block-unknown-source
 no bridge-group 1 source-learning
 no bridge-group 1 unicast-flooding
!
interface Vlan1
 description $ETH-SW-LAUNCH$$INTF-INFO-HWIC 4ESW$
 no ip address
 ip nat inside
 ip virtual-reassembly
 ip tcp adjust-mss 1452
 bridge-group 1
!
interface Dialer0
 ip address negotiated
 ip mtu 1492
 ip nat outside
 ip virtual-reassembly
 encapsulation ppp
 dialer pool 1
 no cdp enable
 ppp chap hostname xxxx@ttnet
 ppp chap password 0 xxxxx
 ppp pap sent-username xxxxx@ttnet password 0 xxxxx
 ppp ipcp dns request
!
interface Dialer1
 no ip address
 no cdp enable
!
interface BVI1
 ip address 10.10.10.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
!
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 101 interface Dialer0 overload
ip nat inside source static tcp 192.168.2.20 3389 interface Dialer0 3389
!
access-list 23 permit 10.10.10.0 0.0.0.7
access-list 101 permit ip 10.10.10.0 0.0.0.255 any
no cdp run
!
control-plane
!
bridge 1 protocol vlan-bridge
bridge 1 route ip
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