04-20-2016
Dhcp not getting configured on Ubuntu
I have kali running on vbox as :-
Quote:
DISTRIB_ID=Kali
DISTRIB_RELEASE=kali-rolling
DISTRIB_CODENAME=kali-rolling
DISTRIB_DESCRIPTION="Kali GNU/Linux Rolling"
/etc/network/interfaces
Quote:
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
#iface eth0 inet dhcp
auto eth0
iface eth0 inet dhcp
ifup eth0 gives me
Quote:
Listening on LPF/eth0/08:00:27:fa:25:8e
Sending on LPF/eth0/08:00:27:fa:25:8e
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 17
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
tpcdump
Quote:
00:53:31.212388 08:00:27:fa:25:8e > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 08:00:27:fa:25:8e, length 300
00:53:43.828472 08:00:27:fa:25:8e > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 08:00:27:fa:25:8e, length 300
00:53:43.904128 bc:85:56:86:57:6e > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: 10.25.0.81.68 > 255.255.255.255.67: BOOTP/DHCP, Request from bc:85:56:86:57:6e, length 300
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LEARN ABOUT CENTOS
sync_client
SYNC_CLIENT(8) System Manager's Manual SYNC_CLIENT(8)
*
NAME
sync_client - client side of the synchronization (replication) engine
SYNOPSIS
sync_client [ -v ] [ -l ] [ -z ] [ -C config-file ] [ -S servername ]
[ -f input-file ] [ -F shutdown_file ] [ -w wait_interval ]
[ -t timeout ] [ -d delay ] [ -r ] [ -u ] [ -m ]
[ -s ] objects...
DESCRIPTION
Sync_client is the client side of the replication system. It runs on the client (master) system and connects to the target (replica) sys-
tem and generates an appropriate sequence of transactions to synchronize the replica system with the master system.
OPTIONS
-v Verbose mode.
-l Verbose logging mode.
-o Only attempt to connect to the backend server once rather than waiting up to 1000 seconds before giving up.
-z Enable compress. If you set 'sync_compress' in the imapd.conf or pass -z to sync_client, the replication protocol will attempt to
enable deflate compression on the connection.
-C config-file
Read configuration options from config-file.
-S servername
Tells sync_client which server to communicate with. Overrides the sync_host configuration option.
-f input-file
In mailbox or user replication mode: provides list of users or mailboxes to replicate. In rolling replication mode, specifies an
alternate log file (sync_client will exit after processing the log file).
-F shutdown-file
Rolling replication checks for this file at the end of each replication cycle and shuts down if it is present. Used to request nice
clean shutdown at first convenient point. The file in question is removed on shutdown. Overrides sync_shutdown_file option in
imapd.conf
-w interval
Wait this long before starting. Typically used so that we can attach a debugger to one end of the replication system or the other.
-t timeout
Timeout for single replication run in rolling replication. sync_client will negotiate a restart after this many seconds. Default:
600 seconds
-d delay
Minimum delay between replication runs in rolling replication mode. Larger values provide better efficiency as transactions can be
merged. Smaller values mean that the replica system is more up to date and that you don't end up with large blocks of replication
transactions as a single group. Default: 3 seconds.
-r Rolling (repeat) replication mode. Pick up a list of actions recorded by the lmtpd(8), imapd(8), popd(8) and nntpd(8) daemons from
the file specified in sync_log_file. Repeat until sync_shutdwon_file appears.
-n Use the named channel for rolling replication mode. If multiple channels are specified in sync_log_channels then use one of them.
This option is probably best combined with -S to connect to a different server with each channel.
-u User mode. Remaining arguments are list of users who should be replicated.
-m Mailbox mode. Remaining arguments are list of mailboxes which should be replicated.
-s Sieve mode. Remaining arguments are list of users whose Sieve files should be replicated. Principally used for debugging purposes:
not exposed to sync_client(8).
FILES
/etc/imapd.conf
SEE ALSO
sync_server(8)
AUTHORS
David Carter (dpc22@cam.ac.uk), Ken Murchison (ken@oceana.com)
CMU
Project Cyrus SYNC_CLIENT(8)