Re: IPv4 Private Address Space
Rudy Zijlstra <[email protected]>
| Newsgroups | gmane.network.dhcp.isc.dhcp-server |
|---|---|
| Message-ID | <b4c42c1b-d113-6807-2b46-7e2db9c74bfb__17256.8936295406$1620769720$gmane$org@grumpydevil.homelinux.org> |
Hi
On 11-05-2021 23:38, Louis Garcia wrote:
> According to standards set forth in Internet Engineering Task Force
> (IETF) document RFC-1918, the following IPv4 address ranges are
> reserved by the IANA for private internets,
>
> 10.0.0.0/8 IP addresses: 10.0.0.0 – 10.255.255.255
> 172.16.0.0/12 IP addresses: 172.16.0.0 – 172.31.255.255
> 192.168.0.0/16 IP addresses: 192.168.0.0 – 192.168.255.255
>
> dhcpd does not seem to like subnet/mask combination.
>
> authoritative;
> default-lease-time 600;
> max-lease-time 7200;
> subnet 172.16.4.0 netmask 255.240.0.0 {
> option domain-name-servers 172.16.4.1;
> option broadcast-address 172.31.255.255;
> option routers 172.16.4.1;
> option ntp-servers 172.16.4.1;
> range 172.16.4.50 172.16.4.254;
You are using only a /24 (255.255.255.0). Why then the huge netmask
above? This would cause an enormous memory allocation which seems
totally uncalled for.
Cheers
Rudy
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