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How change PPPoE to DHCP connection with desktop NIC?

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Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20) Ethernet connection directly to Cisco cable modem, i.e., no intervening router/hub/switch. Windows 7 Firefox 22.0 ISP requires DHCP setting. How do I change PPPOE to DHCP?

Realtek RTL8168C(P)/8111C(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20) Ethernet connection directly to Cisco cable modem, i.e., no intervening router/hub/switch. Windows 7 Firefox 22.0 ISP requires DHCP setting. How do I change PPPOE to DHCP?

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DHCP is used to assign IP addresses dynamically to networked devices. Firefox connects to the network through Windows, and as far as I know, doesn't have a setting to independently interact with a DHCP server.

Therefore, I think this question would be better addressed to a forum with networking experts and/or Windows experts. You could try this one: http://windowssecrets.com/forums/