On Thursday, July 16, 2009 05:39:24 pm you wrote: > the debian-installer seems to assume that the network is usable as soon > as the link comes up, which may not be the case if the 802.1d spanning > tree protocol is in use, in which case it can be up to ~30 seconds > before the switch port will forward ethernet frames. > > i've noticed that trying to preseed a network install on a machine > attached to an STP-enabled switch usually fails since as soon as the > network link is up, d-i attempts to perform a reverse DNS lookup and > fetch the preseed.cfg file via HTTP, both of which timeout and fail > before the switch port the machine is attached to enters the forwarding > state. > > a nice strategy to detect if the network is usable might be to send ARP > requests for the default gateway's IP address and consider the network > "up" only after the default gateway is reachable. it looks like there > is a busybox version of the arping utility that could help accomplish > this.
Quick & dirty workaround if enabling arping in busybox (or implementing the same in C in netcfg itself) is not an option, may also be to simply increase the number of ARP retries. echo 60 > /proc/sys/net/ipv4/neigh/eth0/mcast_solicit -- Yours sincerely, Floris Bos -- To UNSUBSCRIBE, email to debian-boot-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201012131946.46699....@je-eigen-domein.nl
