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cisco 1751 router & cable modem dhcp addr assignment issue

I have a Cisco 1751 router configured for internet access, but my cable company keeps updating my cable modem ip via dhcp.  I lose the internet when the IP changes because the Default Gateway changes.  I have set e0/0 to recv dhcp addr, however ip route next hop is always changing, anyway around getting a static ip from the cable company?
1 Solution
Set your ip route to use the interface

Ip route e0/0

Hope this helps
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