My current theory (just picked this up from some research on the web - need to test at home tomight) is that the router is using the wrong protocol to connect. The DSL uses PPPoE, but this can look like DHCP to the router since both get IP addresses automagically. Check your router settings and make sure it is using PPPoE. Then check the MTU setting. This is the maximum packet size the router can handle (at least that is what I understand it to mean, and I AM a techy). The internet should be able to handle up to 1500. If changing to PPPoE does not solve the problem right away review this setting and make sure it is set at 1500.
The correct
MTU (maximum transfer units) setting for
PPPoE is
1492. This is because there is an 8-byte "wrapper" to make the
PPP packet "look like" an
Ethernet packet to the network card. An MTU setting of
1500 will slow transfers
substantially due to packet-fragment resends.
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