LinuxQuestions.org - DHCP request from ESXi received by NIC, but dnsmasq doesn't respond.

For my router (Slackware) I have a dnsmasq setup with all devices hard-coded by mac, so they always get the same IP address.

I've got a couple of mobiles, a tablet, a Windows 10 box, a NAS, a couple of printers, and a couple of slackware clients, all getting leases out of this machine and getting internet access routed through it.

The only client that doesn't get an IP is VMWare ESXi 6.5. Tcpdump shows pkts reaching the interface, but dnsmasq doesn't respond (or log).

The packet looks like this:

Code:

root@home:~# tcpdump -i eth0 -n port 67 and port 68 -vvv

tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes

23:05:03.358298 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17), length 328)

    0.0.0.0.68 > 255.255.255.255.67: [udp sum ok] BOOTP/DHCP, Request from 8e:b3:0f:16:05:a8, length 300, xid 0xbf36ce05, secs 37, Flags [none] (0x0000)

          Client-Ethernet-Address 8e:b3:0f:16:05:a8

          Vendor-rfc1048 Extensions

            Magic Cookie 0x63825363

            DHCP-Message Option 53, length 1: Discover

            Parameter-Request Option 55, length 7: 

              Subnet-Mask, BR, Time-Zone, Default-Gateway

              Domain-Name, Domain-Name-Server, Hostname

            Client-ID Option 61, length 7: ether 8e:b3:0f:16:05:a8

            END Option 255, length 0

            PAD Option 0, length 0, occurs 38

Any idea what the problem is?