Hi In bsdinstaller on netconfig_ipv4 stage possible situation of record with empty values ifconfig in rc.conf. For this purpose it is necessary on a question "Would you like to configure IPv4 for this interface" choose "Yes", then "No" for configuring via DHCP and in the dialog forms with IP Address, Subnet Mask and GW choose "Ok" without any data. After this rc.conf will contain: ifconfig_IF=" inet netmask " that isn't critical but generates "ifconfig: 'netmask' requires argument" warning when netif service start. I suggest to add similar to this: =========--- /usr/libexec/bsdinstall/netconfig_ipv4 2011-11-03 23:47:15.920391101 +0400 +++ /netconfig_ipv4 2011-11-04 01:59:49.573390155 +0400 @@ -69,6 +69,12 @@ 'Default Router' 3 0 "$ROUTER" 3 20 16 0 \ 2>&1 1>&3) if [ $? -eq $DIALOG_CANCEL ]; then exit 1; fi + +if [ `echo $IF_CONFIG| tr ' ' '\n' |grep -c .` -ne 3 ]; then + dialog --backtitle "FreeBSD Installer" --title "Error" --msgbox \ + "All fields should be filled" 0 0 + exit 1 +fi exec 3>&- echo $INTERFACE $IF_CONFIG | ========= Thanks.