[ovirt-users] Re: DHCP Client in Guest VM does not work on ovirtmgmt

Friday, 25 October 2019

Only to increase the details?

With tcpdump on ovirt node it seems that DHCP is pass by interfaces

[root@srv-virt8 ~]# tcpdump -i any -pvn port 67 and port 68
tcpdump: listening on any, link-type LINUX_SLL (Linux cooked), capture size 262144 bytes
16:16:52.605855 ethertype IPv4, IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto
UDP (17), length 328)
    172.20.0.254.bootps > 172.20.0.228.bootpc: BOOTP/DHCP, Reply, length 300, xid
0x2f8f346e, Flags [none]
          Your-IP 172.20.0.228
          Client-Ethernet-Address 56:6f:a5:6a:00:06
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Offer
            Server-ID Option 54, length 4: 172.20.0.254
            Lease-Time Option 51, length 4: 7200
            Subnet-Mask Option 1, length 4: 255.255.255.0
            Default-Gateway Option 3, length 4: 172.20.0.254
            Domain-Name Option 15, length 19: "mydomain.com"
            Domain-Name-Server Option 6, length 4: 172.20.0.254
16:16:52.605855 ethertype IPv4, IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto
UDP (17), length 328)
    172.20.0.254.bootps > 172.20.0.228.bootpc: BOOTP/DHCP, Reply, length 300, xid
0x2f8f346e, Flags [none]
          Your-IP 172.20.0.228
          Client-Ethernet-Address 56:6f:a5:6a:00:06
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Offer
            Server-ID Option 54, length 4: 172.20.0.254
            Lease-Time Option 51, length 4: 7200
            Subnet-Mask Option 1, length 4: 255.255.255.0
            Default-Gateway Option 3, length 4: 172.20.0.254
            Domain-Name Option 15, length 19: "mydomain.com"
            Domain-Name-Server Option 6, length 4: 172.20.0.254
16:16:52.605855 IP (tos 0x10, ttl 128, id 0, offset 0, flags [none], proto UDP (17),
length 328)
    172.20.0.254.bootps > 172.20.0.228.bootpc: BOOTP/DHCP, Reply, length 300, xid
0x2f8f346e, Flags [none]
          Your-IP 172.20.0.228
          Client-Ethernet-Address 56:6f:a5:6a:00:06
          Vendor-rfc1048 Extensions
            Magic Cookie 0x63825363
            DHCP-Message Option 53, length 1: Offer
            Server-ID Option 54, length 4: 172.20.0.254
            Lease-Time Option 51, length 4: 7200
            Subnet-Mask Option 1, length 4: 255.255.255.0
            Default-Gateway Option 3, length 4: 172.20.0.254
            Domain-Name Option 15, length 19: "mydomain.com"
            Domain-Name-Server Option 6, length 4: 172.20.0.254

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[ovirt-users] Re: DHCP Client in Guest VM does not work on ovirtmgmt