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Marina IP updated with DNS resolution, other improvements

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Today I released the newest edition of the Marina IP stack for Apple II
computers. This edition adds DNS name resolution, as well as several other
bug fixes and improvements. Domain name resolution means that users can use
human-readable names such as www.yahoo.com instead of hard-to-remember IP
addresses like 98.138.253.109 to access resources on the Internet.

The Marina IP stack is the newest networking implementation for the Apple II
series, designed to have better RFC-compliance than existing
implementations. Written in 6502 assembly language, it is compatible with
all Apple II models that accept the Uthernet card in slot 3.

For more information, and links to download and documentation, visit the
official Marina web site:
http://marina.a2hq.com/


Here is the change log:

- Added checks on destination address for incoming datagrams 
- Datagrams not addressed to our IP, or to broadcast, or DHCP replies, are
dropped. 
- Broadcast flag is set for incoming broadcast datagrams 
- IP datagrams with head longer than 20 bytes are checksummed and accepted,
but options are not processed 
- Fixed checksum routine to work with IP headers longer than 20 bytes 
- Fixed the check for UDP datagrams sent with no checksum (offset was off by
one) 
- Added NETBCAST for storing network broadcast address, e.g. 169.254.255 or
192.168.2.255 
- Incoming check for broadcasts now looks for "all ones" or the network
broadcast address
- Updated IPSEND to use the new check on NETBCAST 
- Wrote IPTOHEX subroutine to convert dotted decimal addresses to 4 hex
digits
- ARPTEST and UDPSENDTEST now take a user-supplied IP address 
- Bug fix: datagrams with Link-Local destination addresses were being
forwarded to router when a routable address was configured 
- intitial DNS resolver implementation that queries for A records 
- IPSEND now uses a retry counter for ARP requests. It will not fail if the
MAC address was not in the ARP table 
- IPSEND forces TTL to 255 when destination is a Link-Local address 
- Increased size of ARP table from 4 to 5 
- display of incoming IP datagrams shows source address 
- renamed UTHERDEMO file to MARINA 


-- 
]DF$
The Marina IP stack for Apple II--
http://marina.a2hq.com/

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Marina IP updated with DNS resolution, other improvements D Finnigan <dog_cow@macgui.com> - 2015-05-20 18:54 +0000
  Re: Marina IP updated with DNS resolution, other improvements D Finnigan <dog_cow@macgui.com> - 2015-06-01 18:22 +0000

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