On Sat, Jul 27, 2013 at 11:04:20PM -0430, Juan Barriteau wrote: > >Synopsis: Not possible to configure more than one interface with dhclient > >Category: Networking > >Environment: > System : OpenBSD 5.4 > Details : OpenBSD 5.4 (GENERIC.MP) #42: Fri Jul 26 12:41:58 MDT > 2013 > > [email protected]:/usr/src/sys/arch/i386/compile/GENERIC.MP > > Architecture: OpenBSD.i386 > Machine : i386 > >Description: > Having 3 network adapters (alc0, rl0 and rl1) I want to dhcp > all of them, always did it with no problem during installation process > (from scratch) or in installed systems until 5.2, since 5.3 and with > current I'm not able to, doing dhclient works only for the first > interface: > > # dhclient alc0 > DHCPREQUEST on alc0 to 255.255.255.255 port 67 > DHCPACK from XXX.XXX.XXX.XXX9 (XX:XX:XX:XX:XX:XX) > bound to XXX.XXX.XXX.XXX -- renewal in 14400 seconds. > > But for the second and third adapters it fails: > > # dhclient rl0 > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 3 > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 6 > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 15 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 16 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 11 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl0 to 255.255.255.255 port 67 interval 10 > interface alc0 already has the offered subnet! > No acceptable DHCPOFFERS received. > No working leases in persistent database - sleeping. > > # dhclient rl1 > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 3 > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 5 > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 13 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 16 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 19 > interface alc0 already has the offered subnet! > DHCPDISCOVER on rl1 to 255.255.255.255 port 67 interval 5 > interface alc0 already has the offered subnet! > No acceptable DHCPOFFERS received. > No working leases in persistent database - sleeping. > > It happens the same no matter if I choose any other of the > adapters first, the first one obtains IP address, but second and third > fails. > > >How-To-Repeat: run dhclient after having a first adapter configured with > >dhclient > >Fix: no on > e > found > > > Thanks in advance, > > Juan Barriteau >
It would appear that dhclient does not like the ip address it gets for the 2nd and 3rd interfaces because the subnets overlap. Hard to say for sure if this is a bug in your situation since you don't provide sufficient information. The check for overlapping subnets was added recently. In particular, 1) Does the behaviour only occur during the install scripts? 2) What are the expected ip addresses and subnets for all the interfaces? Other useful information would be 1) The dhclient.conf file. 2) The /var/db/dhclient.leases.* files. 3) The /etc/hostname.* files. 3) A tcpdump of the traffic for working and non-working setups. .... Ken
