[Dnsmasq-discuss] DNSMASQ Not Sending ACK?

[Jason Kary (jkary)]

Hi Folks,

I’m working on getting DNSMASQ to work with IP RELAY in a VxLAN environment.  Using tcpdump we were able to trace a DHCP relay request to the ‘request’ message.  It appears the server is not sending an DHCP ACK message.  

Here is a tcpdump of the request message:

11:18:56.868214 IP (tos 0x10, ttl 254, id 29262, offset 0, flags [none], proto UDP (17), length 374)
    22.22.22.21.bootps > dhcp-server.localdomain.bootps: [udp sum ok] BOOTP/DHCP, Request from 00:25:b5:00:00:01 (oui Unknown), length 346, hops 1, xid 0x9a632d2c, Flags [none] (0x0000)
       	  Gateway-IP 22.22.22.21
       	  Client-Ethernet-Address 00:25:b5:00:00:01 (oui Unknown)
       	  Vendor-rfc1048 Extensions
       	    Magic Cookie 0x63825363
       	    DHCP-Message Option 53, length 1: Request
       	    Server-ID Option 54, length 4: dhcp-server.localdomain
       	    Requested-IP Option 50, length 4: 10.168.102.132
       	    Parameter-Request Option 55, length 18:
       	      Subnet-Mask, BR, Time-Zone, Classless-Static-Route
       	      Domain-Name, Domain-Name-Server, Hostname, YD
       	      YS, NTP, MTU, Option 119
       	      Default-Gateway, Classless-Static-Route, Classless-Static-Route-Microsoft, Static-Route
       	      Option 252, NTP
       	    Agent-Information Option 82, length 44:
       	      Circuit-ID SubOption 1, length 10: ^A^H^@^F^@LO*^@^I
       	      Remote-ID SubOption 2, length 6: M-LFM-V!M-)w
       	      Unknown SubOption 151, length 10:
       		0x0000:  0062 6274 2d76 786c 616e
       	      Unknown SubOption 11, length 4:
       		0x0000:  0aa8 6601
       	      Unknown SubOption 5, length 4:
       		0x0000:  0aa8 6600
       	    END Option 255, length 0
       	    PAD Option 0, length 0, occurs 24

Is there any obvious issues you can see here?

Take Care
Jason
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