Configuring network profiles in Gentoo

I use my laptop at home and at work. At home, network is configured as static IP address and at work it is using DHCP. So, I needed solution to switch between the two easily. Here is what I came up with.
The contents of my "/etc/conf.d/net" is shown below.

modules_eth0=( "dhclient" )

config_work=( "dhcp" )

config_home="192.168.1.254 netmask 255.255.255.0 brd 192.168.0.255"
routes_home="default via 192.168.1.1"
dns_servers_home="127.0.0.1 192.168.1.1"

cmdline_opt() {
        if [ $# -ne 1 ] || ! [ -r /proc/cmdline ]; then
                return 1
        fi

        for opt in $(cat /proc/cmdline) ; do
                [ "${opt}" = "${1}" ] && return 0
        done

        return 1
}

preup() {
        if [ "${IFACE}" = "eth0" ] ; then
                if cmdline_opt location=home ; then
                        einfo "Setting network profile: home"
                        _configure_variables "home"
                elif cmdline_opt location=work ; then
                        einfo "Setting network profile: work"
                        _configure_variables "work"
                else
                        return 1
                fi
        fi

        # Remember to return 0 on success
        return 0
}

I pass "location" as kernel parameter when I boot the machine. So, I added it to the kernel boot line in "grub.conf". I choose the appropriate kernel to boot from the grub menu depending on whether I am at home or work. The relevant portions of my "grub.conf" is shown below.

title Gentoo Vanilla Sources (2.6.28-ab1) (Home)
        root (hd0,4)
        kernel /boot/kernel-genkernel-x86-2.6.28-ab1 ro real_root=/dev/sda5 location=home

title Gentoo Vanilla Sources (2.6.28-ab1) (Work)
        root (hd0,4)
        kernel /boot/kernel-genkernel-x86-2.6.28-ab1 ro real_root=/dev/sda5 location=work

If there are any easier/cleaner solutions I would like to hear about them.