[ANN] packetgen 2.1.0 released

packetgen 2.1.0 has been released.

* home: <https://github.com/sdaubert/packetgen>
* bugs: <https://github.com/sdaubert/packetgen/issues>
* doc: <http://www.rubydoc.info/gems/packetgen>

PacketGen provides simple ways to generate, send and capture network
packets.

Known protocols are: Ethernet, Dot11, Dot1x, ARP, IP, IPv6, GRE, ICMP,
ICMPv6, UDP, TCP, SNMP, ESP, DNS and IKE.

Changes:

### 2.1.0 / 2017-08-15

* Add support for GRE protocol.
* Types::Fields.define_field takes a new option +optional+ to make a
field optional in a header.
* Fix 2 bugs:
  * Packet#to_f raised unconditionally. This is fixed by using
PcapNG::File instead of File
  * Types::IntString#read: raised a NameError instead of a ParseError.

Dear Sylvain,

Sylvain Daubert <sylvain.daubert@laposte.net> 께서 쓰시길,
《記事 全文 <bdd691c0-a00f-06d4-69f5-0d668ecae9d8@laposte.net> 에서》:

packetgen 2.1.0 has been released.

* home: <https://github.com/sdaubert/packetgen&gt;

PacketGen provides simple ways to generate, send and capture network
packets.

Known protocols are: Ethernet, Dot11, Dot1x, ARP, IP, IPv6, GRE, ICMP,
ICMPv6, UDP, TCP, SNMP, ESP, DNS and IKE.

Hey Sylvain! You nice guy!! Codes are beautiful!!! For some minutes, i did
look your github's the program^^ Very Very Excellent!!!

Sincerely, Byung-Hee.

···

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^고맙습니다 _救濟蒼生_ 감사합니다_^))//