during a CD install of 10.1-ppc on a G5, the network config was written for static IP. 
As a result, the online update hung for a long time, until I realized that the network was down. An dhcpcd eth0 fixed it.
After the installation, yast showed me that eth0 was in dhcp mode. But the config file clearly states static mode.

olaf@sbp2-part11:~> /sbin/ip a
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:14:51:68:b7:00 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::214:51ff:fe68:b700/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:14:51:68:b7:01 brd ff:ff:ff:ff:ff:ff
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
olaf@sbp2-part11:~> cat /etc/sysconfig/network/
config                          ifroute-lo
dhcp                            ifservices.template/
ifcfg-eth-id-00:14:51:68:b7:00  if-up.d/
ifcfg-lo                        providers/
ifcfg.template                  scripts/
if-down.d/                      
olaf@sbp2-part11:~> cat /etc/sysconfig/network/ifcfg-eth-id-00\:14\:51\:68\:b7\:
00 
BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR=''
MTU=''
NAME='Apple NetXtreme BCM5780 Gigabit Ethernet'
NETMASK='255.255.255.0'
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
UNIQUE='ZfLo.9B4CdjajV_2'
USERCONTROL='no'
_nm_name='bus-pci-0001:05:04.0'
olaf@sbp2-part11:~> /sbin/ip a
1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,NOTRAILERS,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:14:51:68:b7:00 brd ff:ff:ff:ff:ff:ff
    inet 1.1.1.8/24 brd 1.1.1.255 scope global eth0
    inet6 fe80::214:51ff:fe68:b700/64 scope link 
       valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether 00:14:51:68:b7:01 brd ff:ff:ff:ff:ff:ff
4: sit0: <NOARP> mtu 1480 qdisc noop 
    link/sit 0.0.0.0 brd 0.0.0.0
olaf@sbp2-part11:~> cat /etc/sysconfig/network/ifcfg-eth-id-00\:14\:51\:68\:b7\:00 
BOOTPROTO='dhcp'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR=''
MTU=''
NAME='Apple NetXtreme BCM5780 Gigabit Ethernet'
NETMASK=''
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
UNIQUE='ZfLo.9B4CdjajV_2'
USERCONTROL='no'
_nm_name='bus-pci-0001:05:04.0'
olaf@sbp2-part11:~>