Question about Option 252 for Web Proxy Auto-Discovery
Glenn Satchell
glenn.satchell at uniq.com.au
Fri Sep 10 09:20:41 UTC 2021
Hi Richard,
The definitive answer is in the dhcp-options man page:
REFERENCE: OPTION STATEMENTS
The text data type specifies an NVT ASCII string, which must be
enclosed in double quotes - for example, to specify a root-path option,
the syntax would be
option root-path "10.0.1.4:/var/tmp/rootfs";
and further down that same document
TEXT
option new-name code new-code = text ;
An option whose type is text will encode an ASCII text string.
For example:
option sql-default-connection-name code 194 = text;
option sql-default-connection-name "PRODZA";
regards,
Glenn
On 2021-09-10 16:57, Bill Shirley wrote:
> # local proxy autodiscovery
> option local-pac-server code 252 = text;
>
> subnet 192.168.1.0 netmask 255.255.255.0 {
> option local-pac-server "http://www.example.com/wpad.dat";
> .
> }
>
> Bill
>
> On 9/8/2021 12:30 PM, perl-list wrote:
>
> I have no specific knowledge of option 252, but, generally speaking in
> the dhcp config file when defining a string value, it is usually in
> quotes. I would guess that to be the case with this as well.
>
> ----- Original Message -----
>
> From: "Parkin, Richard (R.)" <rparki21 at ford.com>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Wednesday, September 8, 2021 10:09:04 AM
> Subject: Question about Option 252 for Web Proxy Auto-Discovery
>
> Greetings!
>
> I have a question about configuring Option 252 for Web Proxy
> Auto-Discovery.
>
> Our IPAM allowed me to generate a configuration statement that
> resembles this:
>
> option 252 http://example.com/wpad.dat;
>
> What I am wondering is if the URL string needs to be quoted for this to
> work,
> like so:
>
> option 252 "http://example.com/wpad.dat";
>
> I haven't been able to find a definitive answer. Is it safer to assume
> the
> quotes are needed?
>
> Thanks!
>
> --
>
> Rich Parkin
>
> Ford Motor Company
>
> DDI Planner (DNS, DHCP, IPAM)
>
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