For Solaris systems you need to apply the following patch after
applying the random ID and host length patches:

From: gedetil@cs.umanitoba.ca (Gilbert E. Detillieux)
Date: Wed, 23 Apr 1997 10:28:05 -0500 (CDT)

BTW, the supplied patches worked fine for me under SunOS 4.x, but failed
under Solaris 2.5.  There were two separate problems there: the macro
MAXHOSTNAMELEN wasn't defined (the code expects it to be in <sys/param.h>,
but under Solaris, it's in the system-supplied <netdb.h>, which bind doesn't
use, since it comes with its own version of that file), and the Makefiles
for the shared library directories weren't patched to know about the file
res_random.o (and .c).

The following patch, although probably not the cleanest fix, works for
Solaris 2.5.

*** res/res_comp.c.dist	Mon Dec  2 03:17:22 1996
--- res/res_comp.c	Tue Apr 22 15:01:51 1997
***************
*** 98,103 ****
--- 98,109 ----
  
  	dn = exp_dn;
  	cp = comp_dn;
+ 
+ #ifndef MAXHOSTNAMELEN
+ #define MAXHOSTNAMELEN 256
+ #endif
+ 	if (length > MAXHOSTNAMELEN-1)
+ 		length = MAXHOSTNAMELEN-1;
  	eom = exp_dn + length;
  	/*
  	 * fetch next label in domain name
*** shres/solaris/Makefile.dist	Sat Sep 21 19:13:33 1996
--- shres/solaris/Makefile	Tue Apr 22 15:09:11 1997
***************
*** 22,27 ****
--- 22,28 ----
  	res_comp.o res_init.o res_mkquery.o res_query.o res_send.o \
  	getnetbyaddr.o getnetbyname.o getnetent.o getnetnamadr.o \
  	gethnamaddr.o sethostent.o nsap_addr.o inet_pton.o inet_ntop.o \
+ 	res_random.o \
  	inet_addr.o
  
  all: libresolv.so
***************
*** 67,69 ****
--- 68,71 ----
  inet_addr.o: ../../res/inet_addr.c
  inet_ntop.o: ../../res/inet_ntop.c
  inet_pton.o: ../../res/inet_pton.c
+ res_random.o: ../../res/res_random.c

Note that for other platforms where shared libraries are supported in bind,
the Makefiles should likewise be fixed in the appropriate shres directories.

-- 
Gilbert E. Detillieux		E-mail:	<gedetil@cs.umanitoba.ca>
Dept. of Computer Science	Web:	http://www.cs.umanitoba.ca/~gedetil/
University of Manitoba		Phone:	(204)474-8161
Winnipeg, MB, CANADA  R3T 2N2	Fax:	(204)269-9178
    "The earth is like a tiny grain of sand, only much, much heavier."