ftp://ftp.cse.buffalo.edu/pub/FreeBSD-Archive/old-releases/i386/3.4-RELEASE/compat21/  direct

268 B  1999-12-19CHECKSUM.MD5  1000+ mirrors
158 B  1998-09-21install.sh  1000+ mirrors
235.00 KB  1999-12-19compat21.aa  380+ mirrors
70 B  1999-12-19compat21.inf  199 mirrors
203.47 KB  1999-12-19compat21.ab  10 mirrors
1.35 KB  1999-12-19compat21.mtree  10 mirrors