My DSL router modem is at 192.168.123.254. I have an HDHomerun
network TV tuner that insists on coming up somewhere in the 169.254.X.Y
block. Up until upgrading from 32 to 64 bits, I was able to see a 2nd
eth0 (i.e. eth0:1) using the following /etc/conf.d/net setup...
config_eth0="
192.168.123.251/29 broadcast 192.168.123.255
169.254.1.1/16 broadcast 169.254.255.255"
routes_eth0="
default via 192.168.123.254 metric 20
192.168.123.248/29 via 192.168.123.254 metric 0
169.254.0.0/16 via 169.254.1.1 metric 0"
The 2nd interface is no longer being set up. As amatter of fact, it
appears to be totally unavailable. E.g....
[d531][root][~] /etc/init.d/net.eth0 stop
* Unmounting network filesystems ... [ ok ]
* Bringing down interface eth0
[d531][root][~] ifconfig eth0:0 192.168.123.251/29 broadcast 192.168.123.255
SIOCSIFNETMASK: Cannot assign requested address
[d531][root][~] ifconfig eth0 192.168.123.251/29 broadcast 192.168.123.255
[d531][root][~]
So my system doesn't support even the concept of an alias for eth0.
Looking at the ifconfig manpage...
interface
The name of the interface. This is usually a driver name fol-
lowed by a unit number, for example eth0 for the first Ethernet
interface. If your kernel supports alias interfaces, you can
specify them with eth0:0 for the first alias of eth0. You can
use them to assign a second address. To delete an alias inter-
face use ifconfig eth0:0 down. Note: for every scope (i.e. same
net with address/netmask combination) all aliases are deleted,
if you delete the first (primary).
I see "If your kernel supports alias interfaces". During the
upgrade, I built the kernel from square 1. I already ran into problems
with not enabling FUSE in the new kernel, which killed MTP until I
enabled it. I wouldn't be surprised if I've disabled some kernel
parameter which is required to enable interface aliases. I didn't see
anything obvious in "make menuconfig". A Google search turned up a
gazillion examples of "how to create an alias using ifconfig". That's
not what I want. I want the kernel setting that allows creating alias
interfaces.
--
Walter Dnes <waltd...@waltdnes.org>
I don't run "desktop environments"; I run useful applications
