DHCP 4.0.2, execute() and hardware address mismatch

[Sławomir Paszkiewicz]

Yeah! Works like a charm!

Thanks a lot Patricio!

2010/10/11 Patricio Latini <p_latini at hotmail.com>:
> Thy this
>
> concat (suffix (concat ("0", binary-to-ascii (16, 8, "", substring(hardware,
> 1, 1))),2),":",suffix (concat ("0", bi
> nary-to-ascii (16, 8, "", substring(hardware, 2, 1))),2),":",suffix (concat
> ("0", binary-to-ascii (16, 8, "", substring(hardware, 3, 1))),2),":",
> suffix (concat ("0", binary-to-ascii (16, 8, "", substring(hardware, 4,
> 1))),2),":",suffix (concat ("0", binary-to-ascii (16, 8, "", substring(h
> ardware, 5, 1))),2),":",suffix (concat ("0", binary-to-ascii (16, 8, "",
> substring(hardware, 6, 1))),2));
>
> Patricio
>
> -----Original Message-----
> From: dhcp-users-bounces+p_latini=hotmail.com at lists.isc.org
> [mailto:dhcp-users-bounces+p_latini=hotmail.com at lists.isc.org] On Behalf Of
> Slawomir Paszkiewicz
> Sent: Monday, October 11, 2010 6:41 AM
> To: dhcp-users at lists.isc.org
> Subject: DHCP 4.0.2, execute() and hardware address mismatch
>
> Hello,
> I`m trying to migrate from DNSMasq to ISC DHCP because of failover.
> My problem is that MAC Addresses (hardware) are in different format than
> iptables accept (i`m executing script via execute() which call iptables
> -A FORWARD -m mac --mac-source .... -j ACCEPT).
>
> In ISC DHCP logs format is correct:
>
> DHCPREQUEST for 10.59.146.180 from 00:d0:b8:0c:ba:d8 via eth0
>
> But 'hardware' (i`m using binary-to-ascii(16, 8, ":",
> substring(hardware,1, 6));) gives me:
>
> 0:d0:b8:c:ba:d8 which is incorrect for iptables:
>
> # iptables -A FORWARD -m mac --mac-source 0:d0:b8:c:ba:d8 -s
> 10.59.146.180 -j ACCEPT
> iptables v1.4.4: Bad mac address "0:d0:b8:c:ba:d8"
>
> My question is how to get correct (for iptables) format (same as in dhcp
> logs) ?
>
> Best regards,
> paszczus
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