Cisco 819 Router configuration for Comcast residential
I am having an odd problem with my residential Comcast connection via a Cisco 819 router.
I seem to be able to connect to the Comcast IPv6 network just fine with the interface configuration of my router, but I cannot get a DHCP IPv4 address assigned to the interface of my 819 router.
Of course, you would ask what has changed?
All I did was request Comcast change my speed from their performance tier (12 MBPs down/2 MBPs up) to the blast tier (50 MBPs down/10 MBPs up)
Here is the configuration of the Comcast facing interface on my 819:
interface GigabitEthernet0 description WAN Interface to Comcast ip address dhcp ip access-group BLOCK-TELNET in no ip unreachables no ip proxy-arp ip nat outside ip virtual-reassembly in zone-member security OUTSIDE duplex auto speed auto ipv6 address dhcp ipv6 enable ipv6 dhcp client pd hint ::/60 ipv6 dhcp client pd comcast-ipv6 no cdp enable
IPv6 DHCP works fine. IPv4 DHCP does not. Are they any IPv4 configuration parameters missing?
I am facing a problem where I can get an IPv6 address just fine with the configuration you posted, but only on the WAN interface. The LAN interface just keeps getting a link local. Would you mind posting the config of your LAN interface ?
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