Multiple instances of custom option possible?

[Reissom Beshir]

man dhcp-options

STANDARD DHCPV6 OPTIONS
       DHCPv6  options  differ  from  DHCPv4  options  partially  due to using 16-bit code and length tags, but semantically zero-length
       options are legal in DHCPv6, and multiple options are treated differently.  Whereas in DHCPv4 multiple options would be  concate-
       nated  to  form  one  option,  in DHCPv6 they are expected to be individual instantiations. 


So presumably you could have mutiple instance as follows ???

dhcp6.option-dns-select ip6-addr int8 "domain1"[,"domain2" ...]
dhcp6.option-dns-select ip6-addr int8 "domain10"[,"domain20" ...]
...


Regards,
Reissom Beshir


----- Original Message ----- 
From: teemu.savolainen at nokia.com 
To: dhcp-users at lists.isc.org 
Sent: Wednesday, August 18, 2010 5:03 AM
Subject: Multiple instances of custom option possible?


Hi,

 

I have tried to find answer to following problem but haven't succeeded. Could you please assist?

 

I'm working with prototype implementation relating to my draft: https://datatracker.ietf.org/doc/draft-savolainen-mif-dns-server-selection/

 

I would like to have multiple instances of the proposed DHCPv6 option sent by ISC's DHCPv6 server implementation (4.2.0) and be received by the ISC's client (stateless mode). I get one instance through just fine, but is it possible to have several without modifying code?

 

Definition:

option dhcp6.option-dns-select code xx = { ip6-address, integer 8, domain-list };

 

Thank you,

 

Teemu



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