Why do I see "nmbd[xxxx]: Packet send failed to XX.XX.XX.XX(YYYY) ERRNO=Invalid argument"?

Solution Unverified - Updated -

Issue

  • Why do I see "nmbd[xxxx]: Packet send failed to XX.XX.XX.XX(YYYY) ERRNO=Invalid argument"?

Sample messages:

Dec  5 11:02:55 host1 nmbd[1560]: [2019/12/05 11:02:55.229988,  0] ../source3/libsmb/nmblib.c:909(send_udp)
Dec  5 11:02:55 host1 nmbd[1560]:  Packet send failed to 192.168.122.134(60772) ERRNO=Invalid argument
Dec  5 11:02:55 host1 nmbd[1560]: [2019/12/05 11:02:55.232758,  0] ../source3/nmbd/nmbd_packets.c:1027(reply_netbios_packet)
Dec  5 11:02:55 host1 nmbd[1560]:  reply_netbios_packet: send_packet to IP 192.168.122.134 port 60772 failed

Environment

  • Red Hat Enterprise Linux 7
  • samba

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