in the testcases that depend on tcputils: tcpip-local-test,
tcpip-remote-test, lshg-tcpip-test and ssh1-fallback-test.

Rev: src/testsuite/functions.sh:1.28
Rev: src/testsuite/lshg-tcpip-local-test:1.3
Rev: src/testsuite/ssh1-fallback-test:1.3
Rev: src/testsuite/tcpip-local-test:1.6
Rev: src/testsuite/tcpip-remote-test:1.5