Carla Schroder wrote:
On Wednesday 24 January 2007 14:35, Simon Kelley wrote:
Carla Schroder wrote:
I'm confused about dnsmasq's DNS cache. I know that it works, and works
well. Is there a way to see the contents of the cache?
Yes, it's easiest to start dnsmasq in debug mode (-d) which keeps it in
the foreground. Then when you want to see the current cache contents,
send dnsmasq SIGUSR1 like this:
killall -USR1 dnsmasq
and a dump will be printed to the terminal.
One more question, and I did try to find an answer on my own- what do the
cache flags mean? (Expires column snipped)
dnsmasq: Host Address Flags
dnsmasq: stinkpad.alrac.net 192.168.1.102 4FRI H
dnsmasq: localhost 127.0.0.1 4F I H
dnsmasq: i.cnn.net 64.236.16.137 4F
dnsmasq: m1.2mdn.net.edgesuite.net a509.cd.akamai.net CF
thanks!
Good point. The complete list is
4 - IPv4 address
6 - IPv6 address
C - CNAME
F - forward (name->address) mapping
R - reverse (address->name) mapping
I - immortal (no expiry time)
D - originates from DHCP
N - negative (name known not to have address)
X - no such domain (name known not to exist)
H - originates from /etc/hosts.
Note that both F and R may be set for names from DHCP or /etc/hosts.
Cheers
Simon.
