The filesizes of the JRE1.1.6 on the installer site (http://webwork.eng/products/jdk/1.1/index.html) are different between FTP and HTTP downloads.
-rwxr-xr-x 1 doan green 5172604 Feb 19 10:20 ftp-jre116-solaris2-sparc.bin*
-rwxr-xr-x 1 doan green 5173572 Feb 19 10:24 http-jre116-solaris2-sparc.bin*
-rwxr-xr-x 1 doan green 5172604 Feb 19 10:20 ftp-jre116-solaris2-sparc.bin*
-rwxr-xr-x 1 doan green 5173572 Feb 19 10:24 http-jre116-solaris2-sparc.bin*