Dhcpd: send_packet: No buffer space available

  • Dec 25 10:46:57 dhcpd: send_packet: No buffer space available
    Dec 25 10:46:33 dhcpd: send_packet: No buffer space available
    Dec 25 10:45:41 dhcpd: send_packet: No buffer space available

    What this message means ?

  • Hi,
    It's that what is saying. The system(kernel/driver) can't get enough memory space for the packets going out. I've seen this so many times when I was using fxp-based cards while back ago. It was mostly cleared by resetting the system, but nic had broken sometimes. If your have any spares that is different from current card, then try it to see if the messages won't observed again.


  • looks like more bad news, my lan fails and is no longer accessible but after reboot everything is fine again. debugging through WAN, when LAN is inaccessible, doesn't show anything. Status:interfaces all up and no errors. System logs also just this annoying "no buffer space available" message.

  • What kind of NIC?

  • Hello,
    If your nic is anything relates to fxp I'd recommend one of vge/em/bge instead.

    yes - you may want to tell first what your nic/build is.


  • bge0: flags=8943 <up,broadcast,running,promisc,simplex,multicast>metric 0 mtu 1500
            options=9b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum>ether 00:0e:7f:6c:31:5f
            inet6 fe80::20e:7fff:fe6c:315f%bge0 prefixlen 64 scopeid 0x1
            inet netmask 0xffffff00 broadcast
            media: Ethernet autoselect (100baseTX <full-duplex>)
            status: active

    it's an onboard nic on a Dell P4 2800 512 DDRAM box.</full-duplex></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum></up,broadcast,running,promisc,simplex,multicast>

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