Hey I have a following with Telia ISP and their dhcp-server... I'm using dhclient to get dynamic IP from ISP and also to update DDNS. When dhclient does DHCPDISCOVER the ISP will issue a new lease for 43200 sec after a normal DHCPOFFER, DHCPREQUEST and DHCPACK cycle; and the interface gets bound to the given address. Now when the dhclient does a subsequent DHCPREQUEST, server will issue DHCP with a declining lease-time ending at the same time as original 43200s lease. By releasing the lease and doing a new DHCPDISCOVER the lease time is reset to 43200s. The ISP how ever keeps track of the MAC and will always issue the same IP.
When the lease-time of 43200 runs out the default gw stops responding and the internet connection dies. The only way to then get it to work is to manually start a new discover cycle (ifdown - ifup). I would like to configure the interface so, that there would not be an interuption in network traffic! Because the IP doesn't change, I would like to configure the WAN interface to stay up with the IP all the time and get dhclient to do DHCPDISCOVER to the ISP to update ISP-firewall to let the traffic through for the next 43200 sec. If the IP changes for some reason, I would like the dhclient to update the WAN interface. Would there be a ready way in Gentoo to achieve this? Or anyway :'D Ps. I hate my ISP :( Pps. I have other problems too... -- -Matti
