On 11/02/15 00:43, Philip Webb wrote: > 150210 Mick wrote: >> Your desktop hasn't. When the link comes up again nothing kicks in >> to either request an IP address from the DHCP server >> or to self-configure one temporarily. Either enable IPv4LL >> or install ifplug/netplug to achieve the same end result. >> On Tuesday 10 Feb 2015 22:36:00 Philip Webb wrote: >>> Thanks for the suggestion, but I still don't know how to proceed. >> If you are using dhcpcd it is enabled by default, >> unless you use -L (-- noipv4ll) in /etc/conf.d/net >> Have you disabled this in your desktop, or are you not using dhcpcd? > Thanks for your patient help (big smile). > AFAICS the config of both machines is the same. > What I have realised (red face) is that while there is a difference, > it is not in resuming the connection after an un/replug, > but in starting Dhcpcd after a reboot : > both machines automatically pick up the connection again after an unplug, > but the netbook starts Dhcpcd automatically after each boot, > whereas the desktop needs to be told to do so via 'dhcpcd'. > > I've searched again for something different between the machines > which would explain why one starts Dhcpcd without being told, > but the other doesn't : I can't see any difference. > 'grep -r dhcp *' in /etc gives the same 2 lines in both machines ; > the netbook's syslog shows it starting Dhcpcd immediately after boot, > while the desktop's syslog shows nothing till I enter 'dhcpcd'. > > IIRC the change happened after the recent update of the netbook, > which I try to keep as close to the desktop system as is possible > (the hardware is different & the netbook doesn't use KDE apps etc). > > Can anyone suggest what mb starting Dhcpcd automatically ? > The logs just show it happening & Htop doesn't show it depending on anything. >
using openrc you can just leave /etc/conf.d/net blank and it should start dhcp for you when the interface is started you do have a difference in versions between dhcpcd on desktop and netbook according to the gentoo wiki [1] you are to use either/or dhcpcd and openrc dhcp but this is not clearly spelled out i've never had to # /etc/init.d/dhcpcd start but i have always # emerge dhcpcd i vaguely recall that openrc started it's own version of dhcp client not requiring dhcpcd, but this is not what the handbook [2] says the easy way forward i guess is to just add dhcpcd to default runlevel on the desktop # rc-update add dhcpcd default the confusing bits are that gentoo can use hotplug detection from udev to start/stop interfaces for you magically also netplug/ifplug will detect carrier changes and start/stop magically what would be useful is if you could dump us from desktop and netbook # rc-status [1] http://wiki.gentoo.org/wiki/Network_management_using_DHCPCD [2] http://wiki.gentoo.org/wiki/Complete_Handbook/Configuring_the_system#Manging_network_with_Gentoo_net..2A_scripts
