.... I have a 64-bit CentOS 5.6 VM running on a 64-bit FC14 host, libvirt 0.8.3-10.fc14, 64-bit. I am getting messages in my syslog file, 2 about every 20 min. about dnsmasq: Aug 17 04:53:52 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 04:53:52 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 05:20:13 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 05:20:13 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 05:40:57 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 05:40:57 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:08:53 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:08:53 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:32:44 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:32:44 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:58:59 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 06:58:59 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 07:19:23 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 07:19:23 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 07:40:27 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 07:40:27 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:01:33 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:01:33 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:24:20 Q6600 rpc.mountd[1689]: authenticated mount request from 192.168.122.213:1010 for /home (/home) Aug 17 08:27:23 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:27:23 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:27:49 Q6600 kernel: [253719.519366] CIFS VFS: No username specified Aug 17 08:27:49 Q6600 kernel: [253719.519394] CIFS VFS: cifs_mount failed w/return code = -22 Aug 17 08:27:49 Q6600 kernel: [253719.527482] CIFS VFS: No username specified Aug 17 08:27:49 Q6600 kernel: [253719.527507] CIFS VFS: cifs_mount failed w/return code = -22 Aug 17 08:31:23 Q6600 kernel: [253932.627920] CIFS VFS: No username specified Aug 17 08:31:23 Q6600 kernel: [253932.627949] CIFS VFS: cifs_mount failed w/return code = -22 Aug 17 08:31:23 Q6600 kernel: [253932.637894] CIFS VFS: No username specified Aug 17 08:31:23 Q6600 kernel: [253932.637925] CIFS VFS: cifs_mount failed w/return code = -22 Aug 17 08:32:51 Q6600 rpc.mountd[1689]: authenticated mount request from 192.168.0.15:939 for /home (/home) Aug 17 08:38:38 Q6600 rpc.mountd[1689]: authenticated unmount request from 192.168.0.15:619 for /home (/home) Aug 17 08:38:43 Q6600 rpc.mountd[1689]: authenticated mount request from 192.168.0.15:644 for /home (/home) Aug 17 08:44:53 Q6600 rpc.mountd[1689]: authenticated unmount request from 192.168.0.15:699 for /home (/home) Aug 17 08:52:08 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:52:08 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 08:59:13 Q6600 rpc.mountd[1689]: authenticated unmount request from 192.168.122.213:671 for /home (/home) Aug 17 09:16:46 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 09:16:46 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 09:43:00 Q6600 dnsmasq-dhcp[1969]: DHCPREQUEST(virbr0) 192.168.122.213 52:54:00:a4:98:a3 Aug 17 09:43:00 Q6600 dnsmasq-dhcp[1969]: DHCPACK(virbr0) 192.168.122.213 52:54:00:a4:98:a3 They are washing other stuff out of easy view .... Is there a way to silence these messages ? Also, my ifconfig shows: [root at Q6600:/etc, Wed Aug 17, 09:51 AM] 1250 # ifconfig eth0 Link encap:Ethernet HWaddr 00:E0:81:C4:F1:A8 inet addr:192.168.0.9 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::2e0:81ff:fec4:f1a8/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:27188084 errors:0 dropped:0 overruns:0 frame:0 TX packets:24641412 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:26215788177 (24.4 GiB) TX bytes:20506959836 (19.0 GiB) Interrupt:16 Memory:d0100000-d0120000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:135350 errors:0 dropped:0 overruns:0 frame:0 TX packets:135350 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:99406539 (94.8 MiB) TX bytes:99406539 (94.8 MiB) virbr0 Link encap:Ethernet HWaddr FE:54:00:A4:98:A3 inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1849 errors:0 dropped:0 overruns:0 frame:0 TX packets:3276 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:259897 (253.8 KiB) TX bytes:559502 (546.3 KiB) vnet0 Link encap:Ethernet HWaddr FE:54:00:A4:98:A3 inet6 addr: fe80::fc54:ff:fea4:98a3/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2335 errors:0 dropped:0 overruns:0 frame:0 TX packets:33985 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:500 RX bytes:308069 (300.8 KiB) TX bytes:1933956 (1.8 MiB) [root at Q6600:/etc, Wed Aug 17, 09:57 AM] 1251 # Is there a way to get vnet0 to use IPV4 ? Where is that configured ? I presume that it (vnet0) is the server/host end of the virbr0 bridge, what type of interface is it ? The online docs are good & voluminous, but I haven't (yet) found any info on this question. In fact, the pages I have seen where brctl commands are shown show nothing for the interface of virbr0 (empty space, no output), where mine shows: [root at Q6600:/etc, Wed Aug 17, 10:19 AM] 1256 # brctl show bridge name bridge id STP enabled interfaces virbr0 8000.fe5400a498a3 yes vnet0 [root at Q6600:/etc, Wed Aug 17, 10:19 AM] 1257 # hence my questions about vnet0 :-) .... TIA for any clues .... -- William A. Mahaffey III ---------------------------------------------------------------------- "The M1 Garand is without doubt the finest implement of war ever devised by man." -- Gen. George S. Patton Jr.