Warning Message from dhclient

[Dave Cottlehuber]

On Sun, 24 Feb 2019, at 22:35, Carmel NY wrote:
> FreeBSD 12.0-RELEASE-p3
> 
> Ever since updating to FreeBSD 12, I have been seeing warning/error
> messages similar to the following:
> 
> Feb 24 07:05:31 scorpio dhclient[84035]: send_packet: No buffer space available
> 
> I am not sure if this is serious or if I should even be worried about
> it. It never happened until I updated to version 12. At times if will
> appear during boot-up also, although it normally appears after the
> machine has been running for a while.
> 
> -- 
> Carmel

Hi Carmel

These are innocuous. I think that, at  startup, they occur when you have an up
interface that doesn't yet have an IP address assigned to it. Presumably the
recurrence is when your dhcp lease reaches its renewal period.

If you check your DHCP leases, /var/db/dhclient.leases.* these should line
up to the time of renewal.

lease {
  interface "igb0";
  fixed-address 172.16.1.4;
  option subnet-mask 255.255.255.0;
  option routers 172.16.1.1;
  option dhcp-lease-time 86400;
  option dhcp-message-type 5;
  option dhcp-server-identifier 172.16.1.1;
  renew 3 2019/2/27 23:11:28;
  rebind 4 2019/2/28 08:11:28;
  expire 4 2019/2/28 11:11:28;
}

you'll find a few mentions of this error message on forums.freebsd.org already and in the email archives too.
 
A+
Dave