On Wed, Sep 11, 2013 at 12:24 PM, Maria Iano <bind-li...@iano.org> wrote: > > What does it mean when the edns0 response to a dig says the overall packet > size will be one value but the message size reported is different. For > example in this reponse the OPT PSEUDOSECTION says udp: 4096 but at the end > it says MSG SIZE rcvd: 275.
The "udp: 4096" in the OPT PSEUDOSECTION is the nameserver that you queried reporting it's max udp packet size that it can accept: >From http://tools.ietf.org/html/rfc2671: 4.5. The sender's UDP payload size (which OPT stores in the RR CLASS field) is the number of octets of the largest UDP payload that can be reassembled and delivered in the sender's network stack. Note that path MTU, with or without fragmentation, may be smaller than this. -- Matthew Horsfall (alh) _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
