sendmsg on em0: No buffer space available

Carmel NY carmel_ny at
Thu Dec 27 18:50:06 UTC 2018

Since updating to FreeBSD 12.0, I have been seeing this message when I

sendmsg on em0: No buffer space available

It is the third line in the following message displayed while booting up.

Feeding entropy: .                                                              
lo0: link state changed to UP                                                   
sendmsg on em0: No buffer space available                                       
em0: link state changed to UP                                                   
Starting Network: lo0 em0.                                                      
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384               
        inet6 ::1 prefixlen 128                                                 
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2                              
        inet netmask 0xff000000                                       
        groups: lo                                                              
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>                               
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500       
        ether 00:1a:a0:89:ca:e4                                                 
        inet6 fe80::21a:a0ff:fe89:cae4%em0 prefixlen 64 scopeid 0x1             
        inet6 2606:a000:b7c2:1700:21a:a0ff:fe89:cae4 prefixlen 64 autoconf      
        media: Ethernet autoselect (100baseTX <full-duplex>)                    
        status: active                                                          

It was not present in older versions of FreeBSD. I don't know what it
means or if it is important.


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