'option routers' not present in dhcp offer packet

[Kernel Jake]

I'm trying to autoconfigure a Cisco Catalyst 2900XL running IOS 12.0(5)WC16.  
The Cisco documentation states that the following dhcp fields are required for
autoconfiguration to be successful: ip address, subnet mask, dns server, 
router ip address, tftp server name.  However, my offer packet does not 
contain the "router" option, and the Catalyst does not respond to the offer.
You can see the offending offer packet at the very bottom of this message.
Any ideas?


beastie# grep -v '^#' /usr/local/etc/dhcpd.conf
server-name example;
default-lease-time 600;
max-lease-time 7200;
ddns-update-style none;
log-facility local7;
subnet 10.0.0.0 netmask 255.0.0.0 {
  option subnet-mask 255.0.0.0;
  option routers 10.10.10.10, 10.22.22.22;
  option domain-name-servers 10.0.0.1;
  option domain-name "example.com";
  filename "foo.cfg";
  next-server 10.0.0.1;
  range 10.0.0.253 10.0.0.254;
}


beastie# dhcpd -d bge1
Internet Systems Consortium DHCP Server V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/
Wrote 0 leases to leases file.
Listening on BPF/bge1/00:30:48:57:b1:d9/10/8
Sending on   BPF/bge1/00:30:48:57:b1:d9/10/8
Sending on   Socket/fallback/fallback-net
DHCPDISCOVER from 00:04:9a:fd:81:80 via bge1
DHCPOFFER on 10.0.0.254 to 00:04:9a:fd:81:80 via bge1


beastie# tcpdump -lenx -s 1500 -i bge1 port bootps or port bootpc | dhcpdump
  TIME: 18:05:37.605301
    IP:> (00:04:9a:fd:81:80)>  (ff:ff:ff:ff:ff:ff)
    OP: 1 (BOOTPREQUEST)
 HTYPE: 1 (Ethernet)
  HLEN: 6
  HOPS: 0
   XID: 000022bf
  SECS: 0
 FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 0.0.0.0
SIADDR: 0.0.0.0
GIADDR: 0.0.0.0
CHADDR: 00:04:9a:fd:81:80:00:00:00:00:00:00:00:00:00:00
 SNAME: .
 FNAME: .
OPTION:  53 (  1) DHCP message type         1 (DHCPDISCOVER)
OPTION:  57 (  2) Maximum DHCP message size 1152
OPTION:  55 (  5) Parameter Request List      1 (Subnet mask)
					      6 (DNS server)
					     15 (Domainname)
					     44 (NetBIOS name server)
					     52 (Option overload)
					    
OPTION:   1 (  3) Subnet mask               255.0.0.0
OPTION:   0 (  0) pad  
[...]
OPTION:   0 (  1) pad                       
OPTION:   1 (  0) Subnet mask               0.0.0.0
OPTION:   0 (  0) pad                       
[...]                    
OPTION:   0 (176) pad                       
OPTION: 176 (176) ???                       52000800000004cf R.......
					    8a06000000000e89 ........
					    50000800000050ea P.....P.
					    ffffff7f00000000 ........
					    00000000000000a0 ........
					    52000800000000a2 R.......
					    5200080000004035 R..... at 5
					    500008000000d000 P.......
					    0000000000000000 ........
					    0000000000000000 ........
					    0000000000005836 ......X6
					    50000800000050ea P.....P.
					    ffffff7f0000d0ea ........
					    ffffff7f000000a0 ........
					    520008000000b706 R.......
					    40000000000000a2 @.......
					    520008000000f0e9 R.......
					    ffffff7f00000200 ........
					    0000020000000000 ........
					    00000000000000a2 ........
					    5200080000000000 R.......
					    000000000000b0b0 ........                 
---------------------------------------------------------------------------
  TIME: 18:05:38.000990
    IP:> (00:30:48:57:b1:d9)>  (00:04:9a:fd:81:80)
    OP: 2 (BOOTPREPLY)
 HTYPE: 1 (Ethernet)
  HLEN: 6
  HOPS: 0
   XID: 000022bf
  SECS: 0
 FLAGS: 0
CIADDR: 0.0.0.0
YIADDR: 10.0.0.254
SIADDR: 10.0.0.1
GIADDR: 0.0.0.0
CHADDR: 00:04:9a:fd:81:80:00:00:00:00:00:00:00:00:00:00
 SNAME: example.
 FNAME: foo.cfg.
OPTION:  53 (  1) DHCP message type     2 (DHCPOFFER)
OPTION:  54 (  4) Server identifier         10.0.0.1
OPTION:  51 (  4) IP address leasetime   600 (10m)
OPTION:   1 (  4) Subnet mask               255.0.0.0
OPTION:   6 (  4) DNS server                 10.0.0.1
OPTION:  15 ( 11) Domainname             example.com
---------------------------------------------------------------------------

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