Data convertion and pre-defined variables for Dhcp site.

[CpServiceSPb]

> Because DHCP-SIP-Servers-DHCP-Option is an "octets" data type, so you have to feed it octets.  e.g.
>		&DHCP-SIP-Servers-DHCP-Option = 0x01c0a800fe
>  That will work.

>* Dhcpdump shows:
*> >* OPTION: 120 ( 12) SIP Servers DHCP Option *3131302e31302e302e323534*
*>  Because you gave the attribute a text string.  Which isn't hex,
and it isn't an IP address.

But option 43 - DHCP-Vendor is octet also. However

&DHCP-Vendor = "http://user:pass@%{listen:src_ipaddr}/pbx"

works fine.

> You just typed it there.  You can add that as hex to the "update" statement.
>* I specified this option at isc-dhcp-server simply
*>* *option sip-pbx-servers 1 192.168.0.254;*
*>  That's nice for them.

I added it
&DHCP-SIP-Servers-DHCP-Option = "0x01c0a800fe"
to update section.
If you talked about it.
But it would be easy that it is in human readable/clear format.

> That's unfortunately more difficult to do in FreeRADIUS.  Your best bet is to just use hex.

Is there string to hex convertion ? Look like

%{hex:%{listen:str_ipaddr}}  ?

But what about your previous words:
> I looked into a lot of docs but didn' t find any success resolution.
> So, how is the best way at unlang to:
> - convert ipaddr type to octet;
> - convert string to octet;
> - convert string to ipaddr ?
> You don't.  The server should automatically do this.

As I understood, in case of 120 option conversion in particular is
made automatically, is it ?