Hi Simon, thanks for the patch,
it's a bit better, the client reports the correct proxyDHCP, but then
tries to fetch pxelinux.0 from the wrong TFTP server IP and fails.
Some network dump info: *only* when I'm using iPXE for the client, in
`dhcpdump -i eth1`, I see the wrong SIADDR:
---------------------------------------------------------------------------
TIME: 2015-05-15 08:43:32.853
IP: 10.161.254.11 (c0:4a:0:2:bc:1e) > 10.161.254.209 (8:0:27:8f:74:ad)
OP: 2 (BOOTPREPLY)
HTYPE: 1 (Ethernet)
HLEN: 6
HOPS: 0
XID: 00000000
SECS: 4
FLAGS: 7f80
CIADDR: 0.0.0.0
YIADDR: 10.161.254.209
SIADDR: 192.168.68.1
GIADDR: 0.0.0.0
CHADDR: 08:00:27:8f:74:ad:00:00:00:00:00:00:00:00:00:00
SNAME: .
FNAME: /ltsp/i386/pxelinux.0.
OPTION: 53 ( 1) DHCP message type 5 (DHCPACK)
OPTION: 54 ( 4) Server identifier 192.168.68.1
OPTION: 60 ( 9) Vendor class identifier PXEClient
OPTION: 97 ( 17) UUID/GUID 00e42f96d0e4e357 ../....W
4da25e75dab1f77f M.^u....
ac .
OPTION: 43 ( 7) Vendor specific info 470480000000ff G......
---------------------------------------------------------------------------
In the iPXE's `config` I don't see 192.168.68.x anywhere though.
On the other hand, when I'm using the NIC's PXE stack, I don't see
192.168.68.1 anywhere in the output of `dhcpdump`!!!
I'm attaching the whole output of `tcpdump` below, maybe your
experienced eyes will pinpoint it.
If it makes any difference, I applied your patch to the Ubuntu's 14.04
dnsmasq version (dnsmasq-base 2.68-1ubuntu0.1), but I can also test with
the git trunk if needed.
Thanks a lot,
Alkis
==================================================
alkisg@srv1-dide:~/tmp/dnsmasq/dnsmasq-2.68$ sudo tcpdump -i eth1 port
67 or port 68 or port 69 or port 4011 -e -n -vv
[sudo] password for alkisg:
tcpdump: listening on eth1, link-type EN10MB (Ethernet), capture size
65535 bytes
09:24:52.784009 08:00:27:8f:74:ad > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 590: (tos 0x0, ttl 20, id 0, offset 0, flags [none],
proto UDP (17), length 576)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request
from 08:00:27:8f:74:ad, length 548, xid 0x288f74ad, secs 4, Flags
[Broadcast] (0x8000)
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Parameter-Request Option 55, length 36:
Subnet-Mask, Time-Zone, Default-Gateway, Time-Server
IEN-Name-Server, Domain-Name-Server, RL, Hostname
BS, Domain-Name, SS, RP
EP, RSZ, TTL, BR
YD, YS, NTP, Vendor-Option
Requested-IP, Lease-Time, Server-ID, RN
RB, Vendor-Class, TFTP, BF
Option 128, Option 129, Option 130, Option 131
Option 132, Option 133, Option 134, Option 135
MSZ Option 57, length 2: 1260
GUID Option 97, length 17:
0.208.150.47.228.227.228.77.87.162.94.117.218.177.247.127.172
ARCH Option 93, length 2: 0
NDI Option 94, length 3: 1.2.1
Vendor-Class Option 60, length 32:
"PXEClient:Arch:00000:UNDI:002001"
09:24:52.784016 08:00:27:8f:74:ad > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 590: (tos 0x0, ttl 20, id 0, offset 0, flags [none],
proto UDP (17), length 576)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request
from 08:00:27:8f:74:ad, length 548, xid 0x288f74ad, secs 4, Flags
[Broadcast] (0x8000)
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Parameter-Request Option 55, length 36:
Subnet-Mask, Time-Zone, Default-Gateway, Time-Server
IEN-Name-Server, Domain-Name-Server, RL, Hostname
BS, Domain-Name, SS, RP
EP, RSZ, TTL, BR
YD, YS, NTP, Vendor-Option
Requested-IP, Lease-Time, Server-ID, RN
RB, Vendor-Class, TFTP, BF
Option 128, Option 129, Option 130, Option 131
Option 132, Option 133, Option 134, Option 135
MSZ Option 57, length 2: 1260
GUID Option 97, length 17:
0.208.150.47.228.227.228.77.87.162.94.117.218.177.247.127.172
ARCH Option 93, length 2: 0
NDI Option 94, length 3: 1.2.1
Vendor-Class Option 60, length 32:
"PXEClient:Arch:00000:UNDI:002001"
09:24:52.784170 c0:4a:00:02:bc:1e > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 365: (tos 0xc0, ttl 64, id 5393, offset 0, flags
[none], proto UDP (17), length 351)
10.161.254.11.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP,
Reply, length 323, xid 0x288f74ad, secs 4, Flags [Broadcast] (0x8000)
Client-Ethernet-Address 08:00:27:8f:74:ad
file "/ltsp/i386/pxelinux.0"
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 10.161.254.11
Vendor-Class Option 60, length 9: "PXEClient"
GUID Option 97, length 17:
0.208.150.47.228.227.228.77.87.162.94.117.218.177.247.127.172
Vendor-Option Option 43, length 41:
6.1.3.10.4.0.80.88.69.8.7.128.0.1.10.161.254.11.9.20.128.0.17.66.111.111.116.32.102.114.111.109.32.110.101.116.119.111.114.107.255
09:24:52.786368 00:24:97:f7:d9:06 > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 344: (tos 0x0, ttl 255, id 14657, offset 0, flags
[none], proto UDP (17), length 330)
10.161.254.1.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP,
Reply, length 302, xid 0x288f74ad, Flags [Broadcast] (0x8000)
Your-IP 10.161.254.208
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 10.161.254.1
Lease-Time Option 51, length 4: 430603
RN Option 58, length 4: 215301
RB Option 59, length 4: 376777
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name Option 15, length 10: "ioa.sch.gr"
Domain-Name-Server Option 6, length 8: 194.63.239.164,194.63.238.4
Default-Gateway Option 3, length 4: 10.161.254.1
09:24:54.811307 08:00:27:8f:74:ad > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 590: (tos 0x0, ttl 20, id 1, offset 0, flags [none],
proto UDP (17), length 576)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request
from 08:00:27:8f:74:ad, length 548, xid 0x288f74ad, secs 4, Flags
[Broadcast] (0x8000)
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Requested-IP Option 50, length 4: 10.161.254.208
Parameter-Request Option 55, length 36:
Subnet-Mask, Time-Zone, Default-Gateway, Time-Server
IEN-Name-Server, Domain-Name-Server, RL, Hostname
BS, Domain-Name, SS, RP
EP, RSZ, TTL, BR
YD, YS, NTP, Vendor-Option
Requested-IP, Lease-Time, Server-ID, RN
RB, Vendor-Class, TFTP, BF
Option 128, Option 129, Option 130, Option 131
Option 132, Option 133, Option 134, Option 135
MSZ Option 57, length 2: 1260
Server-ID Option 54, length 4: 10.161.254.1
GUID Option 97, length 17:
0.208.150.47.228.227.228.77.87.162.94.117.218.177.247.127.172
ARCH Option 93, length 2: 0
NDI Option 94, length 3: 1.2.1
Vendor-Class Option 60, length 32:
"PXEClient:Arch:00000:UNDI:002001"
09:24:54.811313 08:00:27:8f:74:ad > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 590: (tos 0x0, ttl 20, id 1, offset 0, flags [none],
proto UDP (17), length 576)
0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request
from 08:00:27:8f:74:ad, length 548, xid 0x288f74ad, secs 4, Flags
[Broadcast] (0x8000)
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Request
Requested-IP Option 50, length 4: 10.161.254.208
Parameter-Request Option 55, length 36:
Subnet-Mask, Time-Zone, Default-Gateway, Time-Server
IEN-Name-Server, Domain-Name-Server, RL, Hostname
BS, Domain-Name, SS, RP
EP, RSZ, TTL, BR
YD, YS, NTP, Vendor-Option
Requested-IP, Lease-Time, Server-ID, RN
RB, Vendor-Class, TFTP, BF
Option 128, Option 129, Option 130, Option 131
Option 132, Option 133, Option 134, Option 135
MSZ Option 57, length 2: 1260
Server-ID Option 54, length 4: 10.161.254.1
GUID Option 97, length 17:
0.208.150.47.228.227.228.77.87.162.94.117.218.177.247.127.172
ARCH Option 93, length 2: 0
NDI Option 94, length 3: 1.2.1
Vendor-Class Option 60, length 32:
"PXEClient:Arch:00000:UNDI:002001"
09:24:54.813302 00:24:97:f7:d9:06 > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 344: (tos 0x0, ttl 255, id 14658, offset 0, flags
[none], proto UDP (17), length 330)
10.161.254.1.67 > 255.255.255.255.68: [udp sum ok] BOOTP/DHCP,
Reply, length 302, xid 0x288f74ad, Flags [Broadcast] (0x8000)
Your-IP 10.161.254.208
Client-Ethernet-Address 08:00:27:8f:74:ad
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: ACK
Server-ID Option 54, length 4: 10.161.254.1
Lease-Time Option 51, length 4: 432000
RN Option 58, length 4: 216000
RB Option 59, length 4: 378000
Subnet-Mask Option 1, length 4: 255.255.255.0
Domain-Name Option 15, length 10: "ioa.sch.gr"
Domain-Name-Server Option 6, length 8: 194.63.239.164,194.63.238.4
Default-Gateway Option 3, length 4: 10.161.254.1
09:24:54.817082 08:00:27:8f:74:ad > c0:4a:00:02:bc:1e, ethertype IPv4
(0x0800), length 590: (tos 0x0, ttl 20, id 2, offset 0, flags [none],
proto UDP (17), length 576)
10.161.254.208.4011 > 10.161.254.11.4011: [udp sum ok] UDP, length 548
09:24:54.817183 c0:4a:00:02:bc:1e > 08:00:27:8f:74:ad, ethertype IPv4
(0x0800), length 342: (tos 0xc0, ttl 64, id 24832, offset 0, flags
[none], proto UDP (17), length 328)
10.161.254.11.4011 > 10.161.254.208.4011: [udp sum ok] UDP, length 300
09:24:55.856377 08:00:27:8f:74:ad > 00:24:97:f7:d9:06, ethertype IPv4
(0x0800), length 80: (tos 0x0, ttl 20, id 3, offset 0, flags [none],
proto UDP (17), length 66)
10.161.254.208.2070 > 192.168.68.1.69: [udp sum ok] 38 RRQ
"/ltsp/i386/pxelinux.0" octet tsize 0
09:25:00.545579 2c:27:d7:dc:2e:66 > ff:ff:ff:ff:ff:ff, ethertype IPv4
(0x0800), length 342: (tos 0x0, ttl 128, id 10752, offset 0, flags
[none], proto UDP (17), length 328)
10.161.254.190.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP,
Request from 2c:27:d7:dc:2e:66, length 300, xid 0xb9606c6d, Flags
[Broadcast] (0x8000)
Client-IP 10.161.254.190
Client-Ethernet-Address 2c:27:d7:dc:2e:66
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Inform
Client-ID Option 61, length 7: ether 2c:27:d7:dc:2e:66
Hostname Option 12, length 8: "gymnasio"
Vendor-Class Option 60, length 8: "MSFT 5.0"
Parameter-Request Option 55, length 13:
Subnet-Mask, Domain-Name, Default-Gateway, Domain-Name-Server
Netbios-Name-Server, Netbios-Node, Netbios-Scope, Router-Discovery
Static-Route, Classless-Static-Route,
Classless-Static-Route-Microsoft, Vendor-Option
Option 252
================================================================
On 14/05/2015 11:32 μμ, Simon Kelley wrote:
On 14/05/15 06:34, Alkis Georgopoulos wrote:
Since proxyDHCP mode doesn't yet work for UEFI clients, I'm using the
following as a workaround:
dhcp-range=tag:!efi,10.161.254.0,proxy
dhcp-range=tag:efi,192.168.68.20,192.168.68.250,8h
This is with a single NIC, dual IP server (10.161.254.11, 192.168.68.1).
The 192.168.67.1 server IP is only used to PXE boot the UEFI clients.
The problem is that the proxyDHCP clients receive
proxyDHCP server IP = 192.168.68.1
instead of the expected 10.161.254.11.
I.e. I would expect dnsmasq to reply with the server IP that matches the
proxyDHCP subnet, not the other one, which the clients can't reach.
Would that be a bug or am I doing something wrong?
Bug, I think, could you try the code in the git repo HEAD
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=tree;h=62018e1f720fa11e83879111a4b1b3753b5c25bb;hb=62018e1f720fa11e83879111a4b1b3753b5c25bb
Cheers,
Simon.
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