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AnswerRe: Mass complaints by developers cause Microsoft to change. Pin
Joe Woodbury14-Mar-19 6:33
professionalJoe Woodbury14-Mar-19 6:33 
GeneralWSO CCC March 13 Pin
Agent__00712-Mar-19 22:41
professionalAgent__00712-Mar-19 22:41 
GeneralRe: WSO CCC March 13 Pin
PeejayAdams12-Mar-19 23:12
memberPeejayAdams12-Mar-19 23:12 
GeneralRe: WSO CCC March 13 - [solved] Pin
Agent__00713-Mar-19 0:31
professionalAgent__00713-Mar-19 0:31 
GeneralRe: WSO CCC March 13 Pin
CodeWraith13-Mar-19 3:48
memberCodeWraith13-Mar-19 3:48 
GeneralRe: WSO CCC March 13 Pin
lw@zi 13-Mar-19 4:10
professional lw@zi 13-Mar-19 4:10 
GeneralRe: WSO CCC March 13 Pin
PeejayAdams13-Mar-19 6:01
memberPeejayAdams13-Mar-19 6:01 
GeneralDuct Tape, Super Glue and Kite String PinPopular
Randor 12-Mar-19 18:22
professional Randor 12-Mar-19 18:22 
Yep,

Apparently that's what's been holding the internet together for the last thirty years. Let me explain;

I am currently working on a closed source DHCP client and server. A perfect implementation of RFC 951, RFC 1534, RFC 1542, RFC 2131, RFC 2132 and RFC 3046. The source code was very elegant and I was quite pleased. Verified and tested it against DNSMASQ, ISC DHCP and various other servers and clients. Everything works as expected!

But then...

I decided to test against older DHCP clients and servers... that's when I realized that for the last 25 years nobody even completely understood the DHCP protocol. Nearly 100% of the DHCP servers I am testing have bugs.

Older versions of Windows Server with a default install will send just the IP address and lease time. No T1 or T2 values which violates the RFC. It also does weird things like NULL terminate it's strings and identifiers. It also sends some of the DHCP values in the wrong network byte order. I'm finding some other DHCP implementations that implement broadcast/unicast incorrectly and ignore the flags. Some DHCP servers just SPAM the network with gratuitous DHCPINFORM messages.

In fact...excluding software written in the last five years... I can't seem to find any DHCP servers in the past 25 years that does NOT have any bugs.

My once beautiful code now has to check for wrong network byte order, NULL terminated strings, missing DHCP options, missing T1 T2 time values and various other weirdness.

You probably thought these old RFC written 30 years ago have been perfected. You were wrong.

Best Wishes,
-David Delaune
GeneralRe: Duct Tape, Super Glue and Kite String Pin
the goat in your machine12-Mar-19 18:37
memberthe goat in your machine12-Mar-19 18:37 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
PIEBALDconsult12-Mar-19 18:45
protectorPIEBALDconsult12-Mar-19 18:45 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Randor 12-Mar-19 19:20
professional Randor 12-Mar-19 19:20 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Jörgen Andersson12-Mar-19 20:18
protectorJörgen Andersson12-Mar-19 20:18 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Richard Deeming13-Mar-19 2:23
mveRichard Deeming13-Mar-19 2:23 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Munchies_Matt12-Mar-19 21:59
memberMunchies_Matt12-Mar-19 21:59 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Gary Wheeler13-Mar-19 7:18
memberGary Wheeler13-Mar-19 7:18 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
kmoorevs13-Mar-19 10:05
memberkmoorevs13-Mar-19 10:05 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
CPallini12-Mar-19 22:23
mveCPallini12-Mar-19 22:23 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Rage13-Mar-19 2:47
professionalRage13-Mar-19 2:47 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
glennPattonWork13-Mar-19 2:51
professionalglennPattonWork13-Mar-19 2:51 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Sander Rossel13-Mar-19 2:52
professionalSander Rossel13-Mar-19 2:52 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
W Balboos13-Mar-19 5:17
mveW Balboos13-Mar-19 5:17 
GeneralRe: Duct Tape, Super Glue and Kite String Pin
Dr.Walt Fair, PE13-Mar-19 6:22
professionalDr.Walt Fair, PE13-Mar-19 6:22 
GeneralMini CCCs 47 Pin
Tim Deveaux12-Mar-19 16:30
memberTim Deveaux12-Mar-19 16:30 
GeneralRe: Mini CCCs 47 Pin
Peter_in_278012-Mar-19 17:25
professionalPeter_in_278012-Mar-19 17:25 
GeneralRe: Mini CCCs 47 - Done Pin
Tim Deveaux12-Mar-19 17:40
memberTim Deveaux12-Mar-19 17:40 

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