Looking at WifiSyslog.txt I also found the following (the 1st column is the line number):
3127 Feb 1 22:08:51 ICE-BOX dhclient: Internet Systems Consortium DHCP Client V3.1.3
3128 Feb 1 22:08:51 ICE-BOX dhclient: Copyright 2004-2009 Internet Systems Consortium.
3129 Feb 1 22:08:51 ICE-BOX dhclient: All rights reserved.
3130 Feb 1 22:08:51 ICE-BOX dhclient: For info, please visit https://www.isc.org/software/dhcp/
3131 Feb 1 22:08:51 ICE-BOX dhclient:
3132 Feb 1 22:08:51 ICE-BOX dhclient: Listening on LPF/br0/00:1f:d0:a1:04:04
3133 Feb 1 22:08:51 ICE-BOX dhclient: Sending on LPF/br0/00:1f:d0:a1:04:04
3134 Feb 1 22:08:51 ICE-BOX dhclient: Sending on Socket/fallback
3135 Feb 1 22:08:51 ICE-BOX dhclient: DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 3
3136 Feb 1 22:08:52 ICE-BOX dhclient: DHCPOFFER of 192.168.2.3 from 192.168.2.1
3137 Feb 1 22:08:52 ICE-BOX dhclient: DHCPREQUEST of 192.168.2.3 on br0 to 255.255.255.255 port 67
3138 Feb 1 22:08:52 ICE-BOX dhclient: DHCPACK of 192.168.2.3 from 192.168.2.1
3139 Feb 1 22:08:53 ICE-BOX kernel: [ 18.457517] eth0: no IPv6 routers present
3140 Feb 1 22:08:53 ICE-BOX kernel: [ 18.640006] br0: no IPv6 routers present
3141 Feb 1 22:08:53 ICE-BOX dhclient: bound to 192.168.2.3 -- renewal in 850925114 seconds.
Looking at WifiSyslog.txt I also found the following (the 1st column is the line number):
3127 Feb 1 22:08:51 ICE-BOX dhclient: Internet Systems Consortium DHCP Client V3.1.3 /www.isc. org/software/ dhcp/ 00:1f:d0: a1:04:04 00:1f:d0: a1:04:04
3128 Feb 1 22:08:51 ICE-BOX dhclient: Copyright 2004-2009 Internet Systems Consortium.
3129 Feb 1 22:08:51 ICE-BOX dhclient: All rights reserved.
3130 Feb 1 22:08:51 ICE-BOX dhclient: For info, please visit https:/
3131 Feb 1 22:08:51 ICE-BOX dhclient:
3132 Feb 1 22:08:51 ICE-BOX dhclient: Listening on LPF/br0/
3133 Feb 1 22:08:51 ICE-BOX dhclient: Sending on LPF/br0/
3134 Feb 1 22:08:51 ICE-BOX dhclient: Sending on Socket/fallback
3135 Feb 1 22:08:51 ICE-BOX dhclient: DHCPDISCOVER on br0 to 255.255.255.255 port 67 interval 3
3136 Feb 1 22:08:52 ICE-BOX dhclient: DHCPOFFER of 192.168.2.3 from 192.168.2.1
3137 Feb 1 22:08:52 ICE-BOX dhclient: DHCPREQUEST of 192.168.2.3 on br0 to 255.255.255.255 port 67
3138 Feb 1 22:08:52 ICE-BOX dhclient: DHCPACK of 192.168.2.3 from 192.168.2.1
3139 Feb 1 22:08:53 ICE-BOX kernel: [ 18.457517] eth0: no IPv6 routers present
3140 Feb 1 22:08:53 ICE-BOX kernel: [ 18.640006] br0: no IPv6 routers present
3141 Feb 1 22:08:53 ICE-BOX dhclient: bound to 192.168.2.3 -- renewal in 850925114 seconds.
Perhaps following the debugging procedures at https:/ /wiki.ubuntu. com/DebuggingNe tworkManager would help - but I'm not positive. A packet trace would of course be the most informative.