Berkeley CSUA MOTD:Entry 26217
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2025/05/24 [General] UID:1000 Activity:popular
5/24    

2002/10/17 [Computer/Networking] UID:26217 Activity:high
10/16   I'm using a cable modem for net access on a computer running
        RH 7.1 linux.  The cable company hands out dynamic IPs via
        dhcp, but I want my IP to stay constant so I can run a webserver.
        How do I force my computer to update its dhcp lease?  I tried
        using /sbin/dhcpcd -n, but that didn't change my dhcpcd-eth0.info
        file.  Thanks.
        \_ go get dsl.
           \_ you get PPPoE and dynamic IPs with regular DSL.
                \_ not if you go DSLExtreme (same price as "regular" crap DSL)
                   \_ you missed my point, which was
                      "say what you mean, and mean what you say."
        \_ Are you dorks still doing the "it doesnt work w/ cable modem" bs?
        \_ How is forcing your computer to update its dhcp lease going
           to keep your IP constant? Also, I think ATTBI blocks port 80.
           get a DSL that will make this easy.
           \_ ATTBI blocks *nothing*.  Nonsense.  I've had the same IP from
              them since they bought my part of @home.  1.5m down/256kbit up
              with dhpc assigned but unchanging IP for $45/month.  Top that.
              Oh yeah, down time so far with AT&T is *zero*.
           \_ Renewing the lease keeps the same IP as far as I can tell.  The
              problem is that if I wait until the lease expires before I
              renew, and a timeout occurs because the network is slow, then
              by the time I renew I get another IP.  This doesn't happen
              often (maybe once a week or so), but it is still annoying
              since it forces me to change my DNS entry. - OP
              \_ DHCP is supposed to give you the same IP under the scenario
                 you describe.  If not then they broke it at their end or
                 your client is woefully stupid.  Put a static IP address on
                 your end and just run your dhcp client via cron and throw
                 away the response.
        \_ Normally (I think Windows does this), you request to renew the lease
           after the "halfway" point. e.g. if you have a 4 day lease, you ask
           to renew after 2 days.
2025/05/24 [General] UID:1000 Activity:popular
5/24    

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